(~s, ~ing, ~ed)
1.
If you ~ from something, usually something you want to do, you deliberately do not do it. (FORMAL)
Abstain from sex or use condoms...
Do you drink alcohol, smoke, or ~?
VERB: V from n, V
2.
If you ~ during a vote, you do not use your vote.
Three Conservative MPs ~ed in the vote.
VERB: V