Break out
Start suddenly (war, fire, etc)
Bring on
Cause (illness)
Come down with
Start to suffer from a minor illness
Come round/to
Become conscious
Cut down (on)
Do less of (smoking)
Reduce an amount of
Feel up to
Feel well enough to do
Get over
Recover from (illness)
Give up
Stop doing sth you do regularly
Look after
Take care of
Pass out
Suddenly become unconscious
Pull through
Survive (a serious illness)
Put down
Kill (animal)
Put on
Gain (weight)
Wear off
Stop being effective (drug)