Synonyms and Antonyms of quantum leap
- Prices have taken a quantum leap upward.
- The new drug is a quantum leap in the fight against cancer.
decadence, decay, declension, decline, decrease, degeneration, descent, deterioration, diminishment, downgrade, ebbing, failing, flagging, languishment, lapse, lessening, reduction, sinking, slowing, weakening, worsening
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