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(word root) in, into
Examples of words with the root en-: energy
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

en- 1

or em- or in-
a. To put into or onto: encapsulate.
b. To go into or onto: enplane.
2. To cover or provide with: enrobe.
3. To cause to be: endear.
4. Thoroughly. Used often as an intensive: entangle.

[Middle English, from Old French, from Latin in-, in; see en in Indo-European roots.]

en- 2

or em-
In; into; within: enzootic.

[Middle English, from Latin, from Greek; see en in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.




prefix forming verbs and verbal derivatives
1. (from nouns)
a. put in or on: entomb; enthrone.
b. go on or into: enplane.
c. surround or cover with: enmesh.
d. furnish with: empower.
2. (from adjectives and nouns) cause to be in a certain condition: enable; encourage; enrich; enslave.
[via Old French from Latin in- in-2]




prefix forming verbs and verbal derivatives
in; into; inside: endemic.
[from Greek (often via Latin); compare in-1, in-2]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



1. the letter N, n.
2. a space that is half the width of an em.


a prefix forming verbs that have the general sense “to cause (a person or thing) to be in” the place, condition, or state named by the stem; more specifically, “to confine in or place on” (entomb); “to cause to be in” (enrich; enslave; entrust); “to restrict,” typically with the additional sense “on all sides, completely” (encircle; enclose; entwine). This prefix is also attached to verbs in order to make them transitive, or to give them a transitive marker if they are already transitive (enkindle; enliven; enshield).
Also, before labial consonants, em-. Compare be-, in-2.
[Middle English < Old French < Latin in- in-2]


a prefix meaning “within, in,” occurring in loanwords from Greek: energy; enthusiasm.
Also, before labial consonants, em-.
[(< Latin) < Greek; c. in-1, in-2]


a suffix formerly used to form transitive and intransitive verbs from adjectives (fasten; harden; sweeten), or from nouns (heighten; lengthen; strengthen).
[Middle English, Old English -n-, as in Middle English fast-n-en, Old English fǣst-n-ian to make fast, fasten]


a suffix used to form adjectives of source or material from nouns: ashen; golden; oaken.
[Middle English, Old English; c. Old High German -īn, Latin -īnus; compare -ine1]


a suffix used to mark the past participle in many strong and some weak verbs: taken; proven.
[Middle English, Old English; c. German -en, Old Norse -inn]


a suffix used in forming the plural of some nouns: brethren; children; oxen.
[Middle English; Old English -an, case ending of n-stem nouns, as in naman oblique singular, and nominative and acc. pl. of nama name]


a diminutive suffix: kitten; maiden.
[Middle English, Old English, from neuter of -en2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in classic literature ?
Although my book is intended mainly for the en- tertainment of boys and girls, I hope it will not be shunned by men and women on that account, for part of my plan has been to try to pleasantly remind adults of what they once were themselves, and of how they felt and thought and talked, and what queer enterprises they sometimes engaged in.