← BackshareGuessfluctuant/ˈflʌk.tʃu.ənt/adjectiveRising and falling; moving back and forth irregularly; not steady.The stock market has been fluctuant this quarter.The fluctuant tides made it hard to anchor the boat.Her fluctuant mood kept everyone guessing how she felt.SynonymsunsteadyvariablewaveringAntonymsstablesteady