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intr.v. per·sist·ed, per·sist·ing, per·sists
1. To be obstinately repetitious, insistent, or tenacious.
2. To hold firmly and steadfastly to a purpose, state, or undertaking despite obstacles, warnings, or setbacks.
3. To continue in existence; last: hostilities that have persisted for years.

[Latin persistere : per-, per- + sistere, to stand; see stā- in Indo-European roots.]

per·sis′ter n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.persisting - relentless and indefatigable in pursuit or as if in pursuit; "impossible to escape the dogging fears"
continuous, uninterrupted - continuing in time or space without interruption; "a continuous rearrangement of electrons in the solar atoms results in the emission of light"- James Jeans; "a continuous bout of illness lasting six months"; "lived in continuous fear"; "a continuous row of warehouses"; "a continuous line has no gaps or breaks in it"; "moving midweek holidays to the nearest Monday or Friday allows uninterrupted work weeks"
References in classic literature ?
Wherefore he had no fancy for lowering for whales after sun-down; nor for persisting in fighting a fish that too much persisted in fighting him.
Monsieur," said Conrart, "you yourself are in the wrong persisting in decorating yourself with the name of an Epicurean; indeed, nothing here reminds me of the doctrine of the philosopher of Gargetta.
Brooke, persisting as quietly as if he were only discussing the nature of last year's weather, and nodding at the end with his usual amenity, was an exasperating form of obstinacy.
Persisting cold wave slashed minimum temperature to minus 5 Celsius while Maximum recorded today was 14 Celsius.
A shallow westerly trough was persisting over extreme north of Pakistan.
SITE Karachi's industrialists have asked Sui Southern Gas Co (SSGC) to immediately rectify persisting low gas pressure in the industrial area or else they will stage protest demonstration at SSGC office.
As this new vortex pattern evolved it began the advection of moist air from the fringes of the tropical air persisting west of the Congo estuary.
In this report, the authors examine the impact of college readiness on students' likelihood of persisting in college and completing a degree.
Specifically, she found that both social and academic adjustment was related to persisting at that university.
As in the deterministic case, low between- and within-species transmission prevents the pathogen from persisting in the target host (prevalence [approximately equal to] 0, Figure 3A; proportion of time pathogen was absent [approximately equal to] 100% , Figure 3B).
The alteration, furthermore, was permanent, persisting even after 240 days' maintenance in clean water after exposure.
When a politican is personally informed by his or her bishop of the grave moral offence, even after the Church and especially the Holy Father have continually taught this since the Second Vatican Council (1962-1965, which called abortion an "abominable crime"), then surely, if words mean anything at all, one must speak here of" obstinately persisting in a manifestly grave sin.