What does fast-acting mean?
Fast-acting means Taking effect quickly..
Pronunciation varies by accent · adjective
Taking effect quickly..
Is this a fast-acting cancer?
Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.
Fast-acting means Taking effect quickly..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Is this a fast-acting cancer?
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