Thayer's Greek Lexicon

 1. to make low, bring low
  1) to level, reduce to a plain
  2) metaph. to bring into a humble condition, reduce to meaner
circumstances
1b1. to assign a lower rank or place to
1b2. to abase
1b3. to be ranked below others who are honoured or rewarded
1b4. to humble or abase myself by humble living
  3) to lower, depress
1c1. of one's soul bring down one's pride
1c2. to have a modest opinion of one's self
1c3. to behave in an unassuming manner
1c4. devoid of all haughtiness