lax

1 of 2

adjective

ˈlaks 

1

a

of the bowels : loose, open

b

: having loose bowels

2

: deficient in firmness : not stringent

lax control

a lax foreman

security has been lax

3

a

: not tense, firm, or rigid : slack

a lax rope

b

: having an open or loose texture

a lax soil

c

: having the constituents spread apart

a lax flower cluster

4

: articulated with the muscles involved in a relatively relaxed state (such as the vowel \i\ in contrast with the vowel \ē\)

laxation

lak-ˈsā-shən 

noun

laxly

ˈlaks-lē 

adverb

laxness noun

lax

2 of 2

noun

: lacrosse

Synonyms of lax

Adjective

• careless
• neglectful
• lazy
• neglecting
• negligent

Choose the Right Synonym for lax

negligent, neglectful, lax, slack, remiss mean culpably careless or indicative of such carelessness.

negligent implies inattention to one's duty or business.

negligent about writing a note of thanks

neglectful adds a more disapproving implication of laziness or deliberate inattention.

a society callously neglectful of the poor

lax implies a blameworthy lack of strictness, severity, or precision.

a reporter lax about accurate quotation

slack implies want of due or necessary diligence or care.

slack workmanship

remiss implies blameworthy carelessness shown in slackness, forgetfulness, or neglect.

had been remiss in their familial duties

Examples of lax in a Sentence

Adjective

The university has been lax about enforcing these rules.

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

Recent Examples on the Web

Adjective

On Saturday, the supermodel, 46, offered a glimpse at her workout routine while enjoying a lax family vacation. — Chanel Vargas, InStyle, 8 Aug. 2026

Molt often carried them into the country in suitcases, easily circumventing the relatively lax customs regulations. — Rory Doherty, Time, 6 Aug. 2026

Overall, experts emphasize, state childcare licensing requirements are far more lax than Head Start's current regulations. — ABC News, 6 Aug. 2026

After the end of sugar, the old plantations had begun leasing their fallow cane lands to Big Ag companies, such as Dow, Pioneer, and Brun’s Syngenta, which took advantage of lax regulations to conduct experimental GMO and pesticide testing. — Guthrie Scrimgeour, Rolling Stone, 2 Aug. 2026

Word History

Etymology

Adjective

Middle English, from Latin laxus loose — more at slack

Noun

by shortening & alteration (x as symbol for -crosse)

First Known Use

Adjective

14th century, in the meaning defined at sense 1a

Noun

1951, in the meaning defined above

Rhymes for lax

• axe
• backs
• blacks
• cracks
• fax
• flax
• hacks
• jacks
• knacks
• lacks
• lakhs
• macs

Kids Definition

lax

adjective

ˈlaks

1

: not firm or tight : loose

2

: not strict

laxly adverb

laxness noun

Medical Definition

lax

adjective

ˈlaks 

1

of the bowels : loose sense 3

2

: having loose bowels