late 14c., from Old French inquisitif, from Late Latin inquisitivus "making inquiry," from Latin inquisit-, past participle stem of inquirere "seek after, search for; examine, investigate" (see inquire).
An housbonde shal nat been Inquisityf of goddes pryuetee nor of his wyf. [Chaucer, "Miller's Prologue"]
Related: Inquisitively; inquisitiveness.
if someone saw a man climbing a light post they might get inquisitive
the police are proverbially inquisitive
inquire
inquirer
inquiring
inquiry
inquisition
inquisitive
inquisitor
inro
inroad
insalubrious
insane