finish (someone/something) off

to destroy or completely defeat someone or something.

Lack of water finished off the agricultural communities in the valley.

He insisted that the disease was not going to finish him off.

• one and the same
• on earth
• one day
• one-day wonder
• on edge
• one for the books
• one for the road
• One good turn deserves another.
• one-hit wonder
• one-horse race
• one-horse town
• one-man band
• One man's meat is another man's poison.
• on end
• one-night stand
• one of a kind
• one of the boys
• one of the lads
• one of those days
• one-shot
• one step ahead
• One step forward, two steps back.
• one swallow doesn't make a summer
• one thing after another
• one thing leads to another