• (v. t.) To use for a bad purpose; to abuse; to misuse; as, to misimprove time, talents, advantages, etc.
Mis`im·prove' transitive verb To use for a bad purpose; to abuse; to misuse; as, to misimprove time, talents, advantages, etc. South. Mis`im*prove'ment noun Ill use or employment; use for a bad purpose.