persistent

constant

Fixed, unvarying quantity

• uninterruptedContinuing without a stop
• steadyFixed, not fluctuating
• incessantNever pausing or stopping

perpetual · unbroken · unrelenting · ceaseless · sustained · prolonged · ongoing · continuous · unabated · lasting

perseverance

Sustained resolve despite obstacles

• determinationFirmness of purpose
• resolveFirmness of purpose
• steadfastnessFirm loyal dedication

fortitude · grit · dedication · commitment · drive · tenacity · endurance · resilience · discipline · willpower

enduring

Persisting through time

• durableAble to withstand use
• permanentFixed without end
• long-lastingPersisting over extended time

abiding · stable · unchanging · timeless · indelible · deep-rooted · ingrained · entrenched · fixed · immutable

obstinate

Firmly refusing to yield

• unyieldingRefusing to give way
• headstrongStubbornly self-willed
• bullheadedStubbornly refusing to yield

mulish · willful · adamant · intransigent · obdurate · pigheaded · unbending · uncompromising · immovable · stiff-necked

nagging

Persistent bothering or complaining

• bothersomeCausing mild annoyance
• irritatingCausing mild frustration
• peskyMildly but persistently irritating

vexing · troublesome · grating · unrelenting · relentless · unshakeable · hounding · badgering · harassing · wearing

repeated

Done or said again

• cyclicalRepeating in rounds
• periodicOccurring at intervals
• chronicPersisting over time

habitual · recurrent · intermittent · reappearing · episodic · repetitive · returning · regular · ongoing · relapsing

• commitment levelscommitted, dedicated, devoted, loyal, faithful
• question tonescurious, skeptical, doubtful, probing, inquisitive
• tenacitydetermined, perseverance, determination, tenacious, tenacity
• dependabilityreliable, dependable, trustworthy, trusted, steadfast
• learner traitsstudious, grit, diligent, curious, inquisitive
• lingering thingsaftertaste, afterglow, echo, trace, residue