Source : Webster's Revised Unabridged Dictionary (1913)

Laxity \Lax"i*ty\ (l[a^]ks"[i^]*t[y^]), n. [L. laxitas, fr.
   laxus loose, slack: cf. F. laxit['e], See {Lax}, a.]
   The state or quality of being lax; want of tenseness,
   strictness, or exactness.

Source : WordNet®

laxity
     n : the quality of being lax and neglectful [syn: {laxness}, {remissness}]