WordWeb Online

1. Consent reluctantly
   - yield, give in, knuckle under, buckle under
    
2. Be fatally overwhelmed
   - yield

Derived forms: succumbed, succumbing, succumbs

Type of: accept, buy the farm [N. Amer, informal], cash in [informal], cash in one's chips [informal], choke, conk [informal], consent, cop it [Brit, informal], croak [informal], decease [archaic], die, drop dead, exit, expire, flatline [informal], give-up the ghost [informal], go, go for, kick the bucket [informal], pass, pass away, perish, pop off [informal], pop one's clogs [informal], snuff it [informal]

Antonym: survive