Synonyms of lax

lax

adjective

ˈlaks 

1

as in careless

failing to give proper care and attention

lax parents who let their kids stay out as late as they want

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

2

as in relaxed

not bound by rigid standards

the guidelines for the essay contest were fairly lax, permitting a wide variety of topics

Synonyms & Similar Words

• relaxed
• flexible
• sloppy
• careless
• slack
• unrestricted
• loose
• easygoing
• negligent
• lazy
• unrestrained
• slipshod
• neglectful
• irresponsible
• slovenly
• remiss
• heedless
• derelict
• sloven
• unfussy

Antonyms & Near Antonyms

• strict
• rigid
• severe
• rigorous
• hard
• harsh
• stern
• tight
• restricted
• careful
• restrained
• conscientious
• scrupulous
• meticulous
• exact
• constrained
• inflexible
• punctilious
• fussy
• painstaking
• implacable

3

as in loosened

not tightly fastened, tied, or stretched

the sheet on the foresail was lax, and so the sail was flapping wildly in the stiff wind

Synonyms & Similar Words

• loosened
• loose
• slack
• relaxed
• insecure
• detached
• unsecured
• undone
• slackened
• unbound
• untied
• unattached
• baggy
• free
• unfastened
• saggy
• blousy

Antonyms & Near Antonyms

• tight
• taut
• tense
• restrained
• constrained
• bound
• attached
• tied
• firm
• fast
• stuck
• fastened
• snug
• jammed
• wedged

Synonym Chooser

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

Some common synonyms of lax are neglectful, negligent, remiss, and slack. While all these words mean "culpably careless or indicative of such carelessness," lax implies a blameworthy lack of strictness, severity, or precision.

a reporter lax about accurate quotation

When could neglectful be used to replace lax?

While in some cases nearly identical to lax, neglectful adds a more disapproving implication of laziness or deliberate inattention.

a society callously neglectful of the poor

When would negligent be a good substitute for lax?

Although the words negligent and lax have much in common, negligent implies inattention to one's duty or business.

negligent about writing a note of thanks

When is remiss a more appropriate choice than lax?

The words remiss and lax are synonyms, but do differ in nuance. Specifically, remiss implies blameworthy carelessness shown in slackness, forgetfulness, or neglect.

had been remiss in their familial duties

When can slack be used instead of lax?

While the synonyms slack and lax are close in meaning, slack implies want of due or necessary diligence or care.

slack workmanship

Example Sentences

Recent Examples of lax

The delivery driver walked past deputies stationed at the scene, prompting outcry about potential contamination and the lax security at the crime scene. —Hannah Fry, Los Angeles Times, 18 Feb. 2026

Child-care fraud in Minnesota is one of many examples, and Minnesota is only one of many states with lax control of welfare spending. —Arkansas Online, 17 Feb. 2026

Coppola, the head-of-table colossus, was fearless and senseless, a beautiful wreck, as lax with details as he was committed to art. —Michael O’Donnell, The Atlantic, 10 Feb. 2026

Dean’s attorneys asked the jury to award $24 million to compensate her for her past and future mental health harms, and around $120 million in punitive damages to punish Uber for its lax safety standards. —Bloomberg, Mercury News, 6 Feb. 2026