1. a feeling of stupefied astonishment • Derivationally related forms: stupefy • Hypernyms: astonishment, amazement • Hyponyms: daze, shock, stupor 2. marginal consciousness - his grogginess was caused as much by exhaustion as by the blows - someone stole his wallet while he was in a drunken stupor • Syn: grogginess, stupor, semiconsciousness • Derivationally related forms: semiconscious (for: semiconsciousness), stuporous (for: stupor) • Hypernyms: unconsciousness 3. the action of stupefying; making dull or lethargic - the professor was noted for his stupefaction of the students • Derivationally related forms: stupefy • Hypernyms: action