English to English

verb (v)

• consent reluctantly(verb.communication)

  Synonym:
  buckle under, give in, knuckle under, yield
  

  source: wordnet30
• be fatally overwhelmed(verb.stative)

  Synonym:
  yield
  Antonym:
  come through, make it, pull round, pull through, survive
  

  source: wordnet30
• To yield; to submit; to give up unresistingly; as, to succumb under calamities; to succumb to disease.(verb)

  source: webster1913