6
unthinking(adjective, careless, indifferent, foolish, stupid)
6
unwatchful(adjective, careless, cold, forget, uncaring)
5
backward(adjective, slow, late, slack, unenthusiastic)
5
behindhand(adjective, soft, slow, careless, indifferent)
5
distrait(noun, adjective, careless, cold, forget)
5
inobservant(adjective, careless, cold, forget, uncaring)
5
lagging(dull, slow, careless, idle, sluggish)
5
slovenly(adjective, careless, indifferent, sloppy, inattentive)
5
unobliging(adjective, cold, forget, uncaring, inattentive)
4
dull(adjective, careless, stupid, idle, sluggish)
4
easygoing(adjective, soft, tolerant, slack, lenient)
4
idle(adjective, dull, careless, sluggish, inactivity)
4
incurious(adjective, careless, cold, forget, uncaring)
4
inert(adjective, dull, idle, sluggish, inactivity)
4
inexact(adjective, cold, forget, uncaring, inattentive)
4
oscitant(noun, adjective, cold, forget, uncaring)
4
weak
3
apathetic(noun, adjective, dull, quiet, easy)
3
bumbling(adjective, neglectful)
3
dronish
11 years ago|12k views|share |citing 
APASmart Define. (2015). remiss thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/remiss/thesaurus/synonyms
ChicagoSmart Define. 2015. "remiss thesaurus" https://smartdefine.org/remiss/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, remiss thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/remiss/thesaurus/synonyms>.
MLASmart Define. "remiss thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/remiss/thesaurus/synonyms>