verb (v)

• discover or determine the existence, presence, or fact of(verb.perception)

  Synonym:
  detect, discover, find, notice
  

  source: wordnet30
• make mention of(verb.communication)

  Example:
  She observed that his presentation took up too much time.
  

  Synonym:
  mention, note, remark
  

  source: wordnet30
• observe with care or pay close attention to(verb.perception)

  Synonym:
  note, take note
  

  source: wordnet30
• watch attentively(verb.perception)

  Example:
  Please observe the reaction of these two chemicals.
  

  source: wordnet30
• show respect towards(verb.social)

  Synonym:
  abide by, honor, honour, respect
  Antonym:
  disrespect
  

  source: wordnet30
• behave as expected during of holidays or rites(verb.social)

  Example:
  Observe Yom Kippur.
  

  Synonym:
  celebrate, keep
  

  source: wordnet30
• follow with the eyes or the mind(verb.social)

  Synonym:
  follow, keep an eye on, watch, watch over
  

  source: wordnet30
• stick to correctly or closely(verb.cognition)

  Synonym:
  keep, maintain
  

  source: wordnet30
• conform one's action or practice to(verb.social)

  Synonym:
  keep
  Antonym:
  breach, break, go against, infract, offend, transgress, violate
  

  source: wordnet30
• To take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with; as, to observe rules or commands; to observe civility.(verb)

  source: webster1913
• To take notice; to give attention to what one sees or hears; to attend.(verb)

  source: webster1913