impact

Noun

• the violent interaction of individuals or groups entering into combat
  • the armies met in the shock of battle
    

• influencing strongly
  • they resented the impingement of American values on European culture
    

• a forceful consequence; a strong effect
  • the book had an important impact on my thinking
    
  • the book packs a wallop
    

• the striking of one body against another

Verb

• have an effect upon
  • Will the new rules affect me?
    

• press or wedge together; pack together

Related words

• Synonyms: 
  shock , impingement , encroachment , wallop , affect , bear upon , bear on , touch on , touch