Synonyms of sinking

1 Syllable
sag, ebb, down
2 Syllables
downtick, downturns, toucher, earthward, fading, dying, falling, reflux, dropping, drowning, tailspin, dimpled, falloff, downtrend, tailspins, descent, fall-off, downturn, cupped
3 Syllables
incurved, descending, bottomward, concave, lessening, liverish, retroflux, refluence, hardnosed, flatitious, prolapse, sinkage, engulfing, immersing, submerging, descendent
4 Syllables
biconcave, incurvated, incurvate, retrograde, retrocession, catabolic
5 Syllables
degenerate, degenerated