1. showing curiosity (Freq. 1) - if someone saw a man climbing a light post they might get inquisitive - raised a speculative eyebrow • Syn: speculative, questioning, wondering • Similar to: curious • Derivationally related forms: speculate (for: speculative), inquisitiveness, inquire 2. inquiring or appearing to inquire - an inquiring look - the police are proverbially inquisitive • Similar to: inquiring • Derivationally related forms: inquisitiveness, inquire