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"Take out" can even be slang for killing someone --> I hired a hitman to take out my enemy. So "reanimate" or "revive" could be a valid antonym too! (Not in the context of this particular crossword - just a fun observation.)
Opposite of "take out" is "give in" but if referring to take out food then the opposite would be dine in/eat in as others have already suggested.
Cheers