Failing in what duty requires:
— Remiss of you not to pay your bills.

synonyms: delinquent, derelict, neglectful.

Roget 738: lax, loose; slack; remiss etc. (careless) 460; weak.    relaxed; licensed; reinless^†, unbridled; anarchical; unauthorized etc. (unwarranted) 925; adespotic^†.    ... show more

Roget 460: neglecting etc. v.; unmindful, negligent, neglectful; heedless, careless, thoughtless; perfunctory, remiss; feebleness etc. 575.    inconsiderate; uncircumspect^†, incircumspect^†; off one's guard; unwary, unwatchful^†, unguarded; offhand.    supine etc. (inactive) 683; inattentive etc. 458; insouciant etc. (indifferent) 823; imprudent, reckless etc. 863; slovenly etc. (disorderly) 59, (dirty) 653; inexact etc. (erroneous) 495; improvident etc. 674.    neglected etc. v.; unheeded, uncared-for, unperceived, unseen, unobserved, unnoticed, unnoted^†, unmarked, unattended to, unthought of, unregarded^†, unremarked, unmissed^†; shunted, shelved.    unexamined, unstudied, unsearched^†, unscanned^†, unweighed^†, unsifted, unexplored.    abandoned; buried in a napkin, hid under a bushel.    ... show more

Roget 603: unwilling; not in the vein, loth, loath, shy of, disinclined, indisposed, averse, reluctant, not content; adverse etc. (opposed) 708; laggard, backward, remiss, slack, slow to; indifferent etc. 866; scrupulous; squeamish etc. (fastidious) 868; repugnant etc. (dislike) 867; restiff^†, restive; demurring etc. v.; unconsenting etc. (refusing) 764; involuntary etc. 601.    ... show more

Roget 683: inactive; motionless etc. 265; unoccupied etc. (doing nothing) 681; unbusied^†.    indolent, lazy, slothful, idle, lusk^†, remiss, slack, inert, torpid, sluggish, otiose, languid, supine, heavy, dull, leaden, lumpish^†; exanimate^†, soulless; listless; drony^†, dronish^†; lazy as Ludlam's dog.    dilatory, laggard; lagging etc. v.; slow etc. 275; rusty, flagging; lackadaisical, maudlin, fiddle-faddle; pottering etc. v.; shilly-shally etc. (irresolute) 605.    sleeping, etc. v.; asleep; fast asleep, dead asleep, sound asleep; in a sound sleep; sound as a top, dormant, comatose; in the arms of Morpheus, in the lap of Morpheus.    sleepy, sleepful^†; dozy^†, drowsy, somnolent, torpescent^†, lethargic, lethargical^†; somnifacient^†; statuvolent^†, statuvolic^†; heavy, heavy with sleep; napping; somnific^†, somniferous; soporous^†, soporific, soporiferous^†; hypnotic; balmy, dreamy; unawakened, unawakened.    sedative etc. 174.    ... show more