WordWeb Online

1. Lacking in rigour or strictness
   "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"
   - slack
    
2. Pronounced with muscles of the tongue and jaw relatively relaxed (e.g., the vowel sound in 'bet')
    
3. Lacking in strength or firmness or resilience
   "a lax rope"
    
4. Emptying easily or excessively
   "lax bowels"
   - loose

Sounds like: lacks, lacs

Derived forms: laxest, laxer

See also: drooping, droopy, floppy, laxly, laxness, limp, loose, loose-jointed, negligent, regular, sagging, slack, tensionless, unconstipated

Antonym: tense

Encyclopedia: Lax Lax, Switzerland