lax
Cross references:
1. negligent
lax \'laks\ \lak-'sa--sh*n\ aj [ME, fr. L laxus loose - more at SLACK] of
the bowels 1a: LOOSE, OPEN 1b: having loose bowels 2: not strict or
stringent 3a: not tense, firm, or rigid : SLACK 3b: having an open or
loose texture 3c: having the constituents spread apart {a ~ flower
cluster} of a speech sound 4: produced with the muscles involved in a
relatively relaxed state (as th e vowels /i/ and /u./ in contrast with the
vowels /e-/ and /u:/ - lax.a.tion n
Webster's English Dictionary