Bananas, doddery, capricious, a bit lacking, and away with the fairies are all synonyms for unstable. Stable and steady are antonyms of unstable. And here are 102 another word for unstable.
Doddery, insecure, movable, not secure, precarious, rickety, rocky, shaky, teetering, tottering, tottery, unbalanced, unfastened, unreliable, unsafe, unsecured, unsteady, wobbling, wobbly, and bockety are all synonyms for unstable.
Capricious, changeable, erratic, fickle, fitful, fluctuating, inconsistent, inconstant, irregular, mercurial, uncertain, unpredictable, unreliable, unsettled, variable, volatile, wavering, and peaky are all another word for unstable.
A bit lacking, away with the fairies, bananas, barking mad, barking, barmy, bats, batty, bonkers, buggy, cracked, crackers, crackpot, crazed, crazy, cuckoo, daft as a brush, daft, demented, deranged, dippy, distracted, disturbed, dotty, insane, loony, loopy, lunatic, mad as a march hare, mad as a hatter, mad, mental, mentally ill, mixed up, neurotic, non compos mentis, not all there, not in one's right mind, not the full shilling, nuts, nutso, nutsy, nutty as a fruitcake, nutty, of unsound mind, off one's head, off one's trolley/rocker, out of one's mind/head, out to lunch, potty, psychotic, raving mad, round the bend, round the twist, screwed up, screwy, sectionable, squirrelly, troubled, unbalanced, unhinged, wacko, and touched are all synonyms for unstable.
Unstable synonym page has a variety of synonyms that differ in length. 1 synonym with 3, and 20 letters and 3 synonyms with 4, 13, and 18 letters. 15 synonyms with 5 letters and 9 synonyms with 6 letters.
11 synonyms with 7 letters and 13 synonyms with 8, and 10 letters. 12 synonyms with 9 letters and 6 synonyms with 11 letters. 4 synonyms with 12 letters and 2 synonyms with 15, and 17 letters. For a total of 98 another word for unstable.
The weather has been quite unstable.
Her emotions felt very unstable today.
The economy is currently unstable and unpredictable.
That chair is too unstable to use.