v. To yield to an overpowering force or overwhelming desire.
v. To give up, or give in.
v. To die.
the GNU version of the Collaborative International Dictionary of English
v. To yield; to submit; to give up unresistingly
The Century Dictionary and Cyclopedia
To sink or give way under pressure or superior force; be defeated; yield; submit; hence, to die.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. be fatally overwhelmed
v. consent reluctantly
Word Usage
"The family agreed to undergo testing to aid the research and though the names of family members who will succumb is known in the laboratories the family agreed they didn't want to be told."