Synonyms of remiss

remiss

adjective

ri-ˈmis 

as in neglectful

failing to give proper care and attention

I would be remiss if I didn't tell you how much I appreciated the lovely gift

Synonyms & Similar Words

• neglectful
• neglecting
• careless
• lazy
• negligent
• derelict
• lax
• slack
• reckless
• disregardful
• oblivious
• forgetful
• irresponsible
• heedless
• inattentive
• incautious
• unmindful
• delinquent
• thoughtless
• uninterested
• disinterested
• indifferent
• unguarded
• unconcerned
• unthinking
• disregarding
• apathetic
• unwary
• wild
• unheeding
• loose

Antonyms & Near Antonyms

• careful
• conscientious
• attentive
• punctilious
• meticulous
• circumspect
• regarding
• cautious
• chary
• nonnegligent
• painstaking
• mindful
• wary
• vigilant
• responsible
• watchful
• guarded
• observant
• thinking
• alert
• interested
• thoughtful
• provident
• concerned
• gingerly
• heedful
• heeding
• regardful
• foresighted
• forethoughtful

Synonym Chooser

How is the word remiss different from other adjectives like it?

Some common synonyms of remiss are lax, neglectful, negligent, and slack. While all these words mean "culpably careless or indicative of such carelessness," remiss implies blameworthy carelessness shown in slackness, forgetfulness, or neglect.

had been remiss in their familial duties

When can lax be used instead of remiss?

While in some cases nearly identical to remiss, lax implies a blameworthy lack of strictness, severity, or precision.

a reporter lax about accurate quotation

When is it sensible to use neglectful instead of remiss?

The words neglectful and remiss are synonyms, but do differ in nuance. Specifically, neglectful adds a more disapproving implication of laziness or deliberate inattention.

a society callously neglectful of the poor

Where would negligent be a reasonable alternative to remiss?

While the synonyms negligent and remiss are close in meaning, negligent implies inattention to one's duty or business.

negligent about writing a note of thanks

When is slack a more appropriate choice than remiss?

In some situations, the words slack and remiss are roughly equivalent. However, slack implies want of due or necessary diligence or care.

slack workmanship

Example Sentences

Recent Examples of remiss

The back of this card would note a 3-0 record and 2.84 ERA as a high school senior, but would be remiss to not include mention of his relationship with pitching coach Tim Dennehy. —C.r. Walker, Chicago Tribune, 24 Feb. 2026

But political leaders have been really remiss in taking any real steps towards addressing this loneliness epidemic. —Bruce Y. Lee, Forbes.com, 24 Jan. 2026

Before charging headlong into this icy island again, the U.S. would be remiss not to learn from past failures and consider how Earth’s rapidly changing climate is fundamentally altering the region. —Paul Bierman, The Conversation, 14 Jan. 2026

There was a spirit of abundance and joy, too; that can’t be remiss. —Robyn Mowatt, Essence, 12 Sep. 2025