verb (v)

• support or hold steady and make steadfast, with or as if with a brace(verb.contact)

  Synonym:
  brace, stabilize, steady
  

  source: wordnet30
• become stable or more stable(verb.change)

  Synonym:
  stabilize
  

  source: wordnet30
• make stable and keep from fluctuating or put into an equilibrium(verb.change)

  Antonym:
  destabilise, destabilize
  

  source: wordnet30