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

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adj. Refusing to give up or let go; persevering obstinately.

adj. Insistently repetitive or continuous: a persistent ringing of the telephone.

adj. Existing or remaining in the same state for an indefinitely long time; enduring: persistent rumors; a persistent infection.

adj. Botany Lasting past maturity without falling off, as the calyx on an eggplant or the scales of a pine cone.

adj. Zoology Retained permanently, rather than disappearing in an early stage of development: the persistent gills of fishes.

adj. Obstinately refusing to give up or let go.

adj. Insistently repetitive.

adj. Indefinitely continuous.

adj. Lasting past maturity without falling off.

adj. About some data or data structures: existing after the execution of the program. Remaining in existence past the lifetime of the program that creates it.

adj. Describing a fractal process that has a positive Brown function

adj. non-transient.

adj. Inclined to persist; having staying qualities; tenacious of position or purpose.

adj. Remaining beyond the period when parts of the same kind sometimes fall off or are absorbed; permanent; ; -- opposed to deciduous, and caducous.

Persisting or continuing in spite of opposition, warning, remonstrance, etc.; refusing to cease or give up some action, course, or pursuit; perservering: as, a persistent beggar; persistent attempts to do something.

That endures; enduring.

Specifically— In botany, continuing without withering: opposed to caducous, deciduous, or marcescent: as, a persistent calyx (one remaining after the corolla has withered).

In zoology, perennial; holding to morphological character, or continuing in functional activity; not degenerate, deciduous, or caducous, as a part or an organ: as, persistent types of structure; the persistent horns of cattle or gills of newts.

Repeated; continual.

adj. retained; not shed

adj. never-ceasing

adj. stubbornly unyielding

adj. continually recurring to the mind

" The classification - intermittent or persistent - leads us to the proper management and treatment of asthma  The basics: intermittent asthma = bronchodilators as needed persistent asthma = daily anti - inflammatory + bronchodilators as needed"

continual    obstinate    unregenerate    stubborn    unforgettable   

deciduous    caducous   

constant    continuing    persistent pulp    persistent character   

persistence    persist    persistently   

permanent    constant    continuing   

assistant    consistent    distant    existent    inconsistent    insistent    nonexistent    resistant    self-consistent   

constant    intense    steady    desperate    insistent    relentless    severe    bold