ascertain


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as·cer·tain

 (ăs′ər-tān′)
tr.v. as·cer·tained, as·cer·tain·ing, as·cer·tains
1. To discover with certainty, as through examination or experimentation. See Synonyms at discover.
2. Archaic To make certain, definite, and precise.

[Middle English acertainen, to inform, from Old French acertener, ascertain- : a-, to (from Latin ad-; see ad-) + certain, certain; see certain.]

as′cer·tain′a·ble adj.
as′cer·tain′a·ble·ness n.
as′cer·tain′a·bly adv.
as′cer·tain′ment n.

ascertain

(ˌæsəˈteɪn)
vb (tr)
1. to determine or discover definitely
2. archaic to make certain
[C15: from Old French acertener to make certain]
ˌascerˈtainable adj
ˌascerˈtainably adv
ˌascerˈtainment n

as•cer•tain

(ˌæs ərˈteɪn)

v.t.
1. to find out definitely; learn with certainty or assurance.
2. Archaic. to make certain, clear, or definitely known.
[1400–50; < Middle French acertain-,acertener to make certain]
as`cer•tain′a•ble, adj.
as`cer•tain′ment, n.
syn: See learn.

ascertain


Past participle: ascertained
Gerund: ascertaining

Imperative
ascertain
ascertain
Present
I ascertain
you ascertain
he/she/it ascertains
we ascertain
you ascertain
they ascertain
Preterite
I ascertained
you ascertained
he/she/it ascertained
we ascertained
you ascertained
they ascertained
Present Continuous
I am ascertaining
you are ascertaining
he/she/it is ascertaining
we are ascertaining
you are ascertaining
they are ascertaining
Present Perfect
I have ascertained
you have ascertained
he/she/it has ascertained
we have ascertained
you have ascertained
they have ascertained
Past Continuous
I was ascertaining
you were ascertaining
he/she/it was ascertaining
we were ascertaining
you were ascertaining
they were ascertaining
Past Perfect
I had ascertained
you had ascertained
he/she/it had ascertained
we had ascertained
you had ascertained
they had ascertained
Future
I will ascertain
you will ascertain
he/she/it will ascertain
we will ascertain
you will ascertain
they will ascertain
Future Perfect
I will have ascertained
you will have ascertained
he/she/it will have ascertained
we will have ascertained
you will have ascertained
they will have ascertained
Future Continuous
I will be ascertaining
you will be ascertaining
he/she/it will be ascertaining
we will be ascertaining
you will be ascertaining
they will be ascertaining
Present Perfect Continuous
I have been ascertaining
you have been ascertaining
he/she/it has been ascertaining
we have been ascertaining
you have been ascertaining
they have been ascertaining
Future Perfect Continuous
I will have been ascertaining
you will have been ascertaining
he/she/it will have been ascertaining
we will have been ascertaining
you will have been ascertaining
they will have been ascertaining
Past Perfect Continuous
I had been ascertaining
you had been ascertaining
he/she/it had been ascertaining
we had been ascertaining
you had been ascertaining
they had been ascertaining
Conditional
I would ascertain
you would ascertain
he/she/it would ascertain
we would ascertain
you would ascertain
they would ascertain
Past Conditional
I would have ascertained
you would have ascertained
he/she/it would have ascertained
we would have ascertained
you would have ascertained
they would have ascertained
ThesaurusAntonymsRelated WordsSynonymsLegend:
Verb1.ascertain - establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize"
gauge - determine the capacity, volume, or contents of by measurement and calculation; "gauge the wine barrels"
translate - determine the amino-acid sequence of a protein during its synthesis by using information on the messenger RNA
rectify - math: determine the length of; "rectify a curve"
redetermine - fix, find, or establish again; "the physicists redetermined Planck's constant"
sequence - determine the order of constituents in; "They sequenced the human genome"
ascertain, find out, learn, watch, determine, see, check - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"
refract - determine the refracting power of (a lens)
count, numerate, enumerate, number - determine the number or amount of; "Can you count the books on your shelf?"; "Count your change"
discover, find - make a discovery, make a new finding; "Roentgen discovered X-rays"; "Physicists believe they found a new elementary particle"
admeasure - determine the quantity of someone's share
situate, locate - determine or indicate the place, site, or limits of, as if by an instrument or by a survey; "Our sense of sight enables us to locate objects in space"; "Locate the boundaries of the property"
2.ascertain - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product"
proofread, proof - read for errors; "I should proofread my manuscripts"
check off, tick off, mark off, tick, check, mark - put a check mark on or near or next to; "Please check each name on the list"; "tick off the items"; "mark off the units"
control - verify by using a duplicate register for comparison; "control an account"
check - verify by consulting a source or authority; "check the spelling of this word"; "check your facts"
double-check - check once more to be absolutely sure
cross-check - check out conflicting sources; crosscheck facts, for example
cinch - make sure of
card - ask someone for identification to determine whether he or she is old enough to consume liquor; "I was carded when I tried to buy a beer!"
spot-check - pick out random samples for examination in order to ensure high quality
verify - confirm the truth of; "Please verify that the doors are closed"; "verify a claim"
ascertain, find out, learn, watch, determine, see, check - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"
cover - maintain a check on; especially by patrolling; "The second officer covered the top floor"
verify, control - check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard; "Are you controlling for the temperature?"
3.ascertain - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"
insure, see to it, ensure, ascertain, check, assure, control, see - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product"
ascertain, determine, find out, find - establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize"
test - determine the presence or properties of (a substance)
4.ascertain - learn or discover with certainty
get a line, get wind, get word, hear, learn, discover, find out, pick up, see - get to know or become aware of, usually accidentally; "I learned that she has two grown-up children"; "I see that you have been promoted"
price - ascertain or learn the price of; "Have you priced personal computers lately?"

ascertain

verb find out, learn, discover, determine, confirm, settle, identify, establish, fix, verify, make certain, suss (out) (slang), ferret out Try to ascertain what services the bank is offering.

ascertain

verb
To obtain knowledge or awareness of something not known before, as through observation or study:
Translations
يَتَحَقَّق، يَتَأكَّد مِن، يُثْبِت
zjistit
finde ud af
ganga úr skugga um
išaiškinamasišaiškintiįsitikintiišsiaiškintipatikrinamas
izdibinātnoskaidrot
doğrusunu öğrenmekortaya çıkarmak

ascertain

[ˌæsəˈteɪn] VTdeterminar, establecer (that que)

ascertain

[ˌæsərˈteɪn] vtvérifier
to ascertain who ... → vérifier qui ...
to ascertain which ... → vérifier quel ...
to ascertain that ... → établir que ...

ascertain

ascertain

[ˌæsəˈteɪn] vt (frm) → accertare
have you ascertained her real name yet? → ha accertato quale sia il suo vero nome?

ascertain

(ӕsəˈtein) verb
to find out. We shall never ascertain the truth.
ˌascerˈtainable adjective
References in classic literature ?
Professor Bumper was looking about, trying to ascertain if there were any evidences of the earthquake in the vicinity, when Tom, who had cautiously gone a little way down into the excavation caused by the fallen trees, uttered a cry of surprise.
The lady in black had once received a pair of prayer-beads of curious workmanship from Mexico, with very special indulgence attached to them, but she had never been able to ascertain whether the indulgence extended outside the Mexican border.
Would the two, for his enlightenment, try to ascertain just what they had in common, and why they belonged to the same party?
Miss Ophelia had listened to this conversation with an air of shrewd, observant gravity; and she still kept her lips tightly compressed, as if determined fully to ascertain her longitude and position, before she committed herself.
The weather growing still more opaque, it was agreed between myself and the other second that before giving the fatal signal we should each deliver a loud whoop to enable the combatants to ascertain each other's whereabouts.
He was a stranger to nearly every member of that body; but, having recently made his escape from the south- ern prison-house of bondage, and feeling his curiosity excited to ascertain the principles and measures of the abolitionists,--of whom he had heard a somewhat vague description while he was a slave,--he was in- duced to give his attendance, on the occasion al- luded to, though at that time a resident in New Bedford.
You had better look about you, and ascertain what you do, and what you mean to do.
Marianne's eagerness to be gone declared her dependence on finding him there; and Elinor was resolved not only upon gaining every new light as to his character which her own observation or the intelligence of others could give her, but likewise upon watching his behaviour to her sister with such zealous attention, as to ascertain what he was and what he meant, before many meetings had taken place.
One afternoon (I had then been three weeks at Lowood), as I was sitting with a slate in my hand, puzzling over a sum in long division, my eyes, raised in abstraction to the window, caught sight of a figure just passing: I recognised almost instinctively that gaunt outline; and when, two minutes after, all the school, teachers included, rose en masse, it was not necessary for me to look up in order to ascertain whose entrance they thus greeted.
Earnshaw; and I shook the handle of his den that I might ascertain if he were yet living.
Immediately on my arrival, I will ascertain the speediest means of communicating with Mr.
Is it the immediate object of this confidence, that you may at once ascertain that, with my knowledge?