The Oxford Thesaurus An A-Z Dictionary of Synonyms - impactn.

1) collision, contact, striking, crash, smash, bump, colliding, crashing, smashing, bumping: The impact of the car against the stone wall was heard a mile away. 2) effect, impression, influence, import, meaning, bearing, force, thrust, weight, burden, brunt, repercussions, results, consequences: It is becoming clear that technology is having an adverse impact on the environment. --v. 3) strike, hit, collide with: When its orbit decays, the satellite will impact the surface of the moon. 4) affect, modify, change: I wonder how the news of the bankruptcy will impact share prices.