Synonyms of downswing

1 Syllable
dip, sag, skid, slump, drop, fall, dive
2 Syllables
plunge, tumble, slumping, drop-off, downtrend, falloff, pratfall, dropoff, descent, fall-off, downfall, downturn, slide
3 Syllables
falling-off, downslide, decrease, sinkage
4 Syllables
nosedive
5 Syllables
deterioration