verb (v)

• show approval or appreciation of(verb.social)

  Synonym:
  recognize
  

  source: wordnet30
• grant credentials to(verb.social)

  Synonym:
  accredit, recognize
  

  source: wordnet30
• detect with the senses(verb.perception)

  Synonym:
  discern, distinguish, make out, pick out, recognize, spot, tell apart
  

  source: wordnet30
• express greetings upon meeting someone(verb.communication)

  Synonym:
  greet, recognize
  

  source: wordnet30
• express obligation, thanks, or gratitude for(verb.communication)

  Synonym:
  acknowledge, recognize
  

  source: wordnet30
• be fully aware or cognizant of(verb.cognition)

  Synonym:
  agnise, agnize, realise, realize, recognize
  

  source: wordnet30
• perceive to be the same(verb.cognition)

  source: wordnet30
• accept (someone) to be what is claimed or accept his power and authority(verb.cognition)

  Synonym:
  acknowledge, know, recognize
  

  source: wordnet30