n. 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