Synonyms to on the decline

infirm, Adamic, abulic, adrift, afloat, afraid, ailing, alternating, amorphous, anile, backsliding, cachectic, capricious, carnal, changeable, changeful, cowardly, crabbed, crippled, crumbling, dangerous, debilitated, decrepit, desultory, deviable, disintegrating, dizzy, doddered, doddering, doddery, drained, eccentric, enervated, enfeebled, erratic, erring, exhausted, failing, faint, fainthearted, fallen, faltering, fast and loose, feeble, feebleminded, fickle, fitful, fleshly, flickering, flighty, flimsy, flitting, fluctuating, fossilized, fragile, frail, freakish, gerontal, gerontic, giddy, hazardous, healthless, ill, impetuous, impulsive, impure, in poor health, inconsistent, inconstant, indecisive, indisposed, insecure, insubstantial, invalid, invertebrate, irregular, irresolute, irresponsible, lame, languishing, lapsed, mazy, mercurial, moody, moribund, mossbacked, moth-eaten, mummylike, of easy virtue, pale, palsied, papery-skinned, peaked, peaky, peccable, perilous, pliable, poor, poorish, postlapsarian, precarious, prodigal, provisional, rambling, ravaged with age, recidivist, recidivistic