Misimprove
Pronunciation : Mis`im*prove"
Part of Speech : v.
Definition : Defn: To use for a bad purpose; to abuse; to misuse; as, to misimprove time, talents, advantages, etc. South.
t.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder