This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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verb-intransitive. To be obstinately repetitious, insistent, or tenacious.

verb-intransitive. To hold firmly and steadfastly to a purpose, state, or undertaking despite obstacles, warnings, or setbacks.

verb-intransitive. To continue in existence; last: hostilities that have persisted for years.

v. To go on stubbornly or resolutely.

v. To repeat an utterance.

v. To continue to exist.

v. To cause to persist; make permanent.

verb-intransitive. To stand firm; to be fixed and unmoved; to stay; to continue steadfastly; especially, to continue fixed in a course of conduct against opposing motives; to persevere; -- sometimes conveying an unfavorable notion, as of doggedness or obstinacy.

To continue steadily and firmly in some state, course of action, or pursuit, especially in spite of opposition, remonstrance, etc.; persevere, especially with some degree of obstinacy.

v. stay behind

v. continue to exist

v. be persistent, refuse to stop

"In some people, fairly large percentages of fetal hemoglobin persist into adulthood."

persisted    persistently    persisting    persists   

stick    linger   

persistent    persistence   

persevere    insist    continue    remain    last   

Liszt    assist    cist    coexist    consist    cyst    delist    desist    dismissed    enlist