| unstable | (adjective) lacking stability or fixity or firmness | - |
|---|
| (adjective) subject to change; variable | Synonyms: fluid |
| (adjective) suffering from severe mental illness | Synonyms: mentally ill, unsound |
| (adjective) disposed to psychological variability | - |
| (adjective) highly or violently reactive | - |
| (adjective) affording no ease or reassurance | Synonyms: precarious |
| unstaged | (adjective) not performed on the stage | - |
|---|
| unstained | (adjective) not stained | - |
|---|
| (adjective) without soil or spot or stain | Synonyms: unsoiled, unspotted |
| (adjective) (of reputation) free from blemishes | Synonyms: stainless, unsullied, untainted, untarnished |
| (adjective) not having a coating of stain or varnish | Synonyms: unvarnished |
| unstarred | (adjective) not marked with an asterisk | Synonyms: unasterisked |
|---|
| unstated | (adjective) not made explicit | Synonyms: unexpressed, unsaid, unspoken, unuttered, unverbalised, unverbalized, unvoiced |
|---|
| unstatesmanlike | (adjective) not statesmanlike | - |
|---|
| unsteady | (adjective) subject to change or variation | - |
|---|
| (adjective) not firmly or solidly positioned | Synonyms: unfirm |
| unsterilised | (adjective) not sterilized | Synonyms: unsterilized |
|---|
| unsterilized | (adjective) not sterilized | Synonyms: unsterilised |
|---|
| unstilted | (adjective) flowing naturally and continuously | - |
|---|
| unstimulating | (adjective) not stimulating | Synonyms: unexciting |
|---|
| unstinted | (adjective) very generous | Synonyms: lavish, munificent, overgenerous, too-generous, unsparing, unstinting |
|---|
| unstinting | (adjective) very generous | Synonyms: lavish, munificent, overgenerous, too-generous, unsparing, unstinted |
|---|
| unstirred | (adjective) not agitated by stirring | - |
|---|
| unstoppable | (adjective) not capable of being stopped | - |
|---|
| unstoppered | (adjective) (of a container) having the stopper removed | - |
|---|
| unstrained | (adjective) not resulting from undue effort; not forced | Synonyms: unforced |
|---|
| (adjective) not placed under psychological stress | - |
| unstratified | (adjective) not deposited in layers | - |
|---|
| unstressed | (adjective) not bearing a stress or accent | - |
|---|
| unstructured | (adjective) lacking definite structure or organization | - |
|---|
| (adjective) lacking the system or structure characteristic of living bodies | Synonyms: amorphous |
| unstrung | (adjective) emotionally upset | - |
|---|
| unstuck | (adjective) free | - |
|---|
| (adjective) thrown into a state of disorganization or incoherence | Synonyms: undone |
| unstudied | (adjective) not by design or artifice; unforced and impromptu | Synonyms: uncontrived |
|---|
| (adjective) lacking knowledge gained by study often in a particular field | - |
| unstudious | (adjective) not studious | - |
|---|
| unstylish | (adjective) lacking in style or elegance | Synonyms: styleless |
|---|
| (adjective) not in accord with or not following current fashion | Synonyms: unfashionable |