Definition of Lax

Adjective: lax (laxer,laxest) laks

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