Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [1481]
un·ruf·fled adjective 1 : not agitated or upset
2 : not ruffled : SMOOTH <~ water>
un·rul·i·ness noun : the quality or state of being unruly
Synonyms
defiance, disobedience, insubordination, rebelliousness, recalcitrance, refractoriness—more at DISOBEDIENCE
un·ruly adjective [ORIGIN: ME unreuly, fr. un- + reuly disciplined, fr. reule rule, fr. OF, fr. L regula straightedge, rule, fr. regere to direct]
: not readily ruled, disciplined, or managed
Synonyms
contrary, defiant, disobedient, froward, headstrong, intractable, rebellious, recalcitrant, refractory, uncontrollable, untoward, wayward, willful—more at DISOBEDIENT
un·sad·dle verb 1 : to remove the saddle from a horse
2 : UNHORSE
un·safe adjective : not safe : exposed or exposing to danger
Synonyms
dangerous, grave, grievous, hazardous, menacing, parlous, perilous, risky, serious, unhealthy, venturesome—more at DANGEROUS
un·sat·is·fac·to·ry adjective : not satisfactory
Synonyms
bad, deficient, inferior, lousy, off, poor, punk, rotten, substandard, unacceptable, wanting, wretched, wrong—more at BAD
un·sat·u·rat·ed adjective 1 : capable of absorbing or dissolving more of something
2 : containing double or triple bonds between carbon atoms <~ fats>
— un·sat·u·rate noun
un·saved adjective : not saved; especially : not rescued from eternal punishment
un·sa·vory adjective 1 : TASTELESS
2 : unpleasant to taste or smell
3 : morally offensive
Synonyms
distasteful, unappetizing—more at DISTASTEFUL
un·say verb -said ; -say·ing : to take back (something said) : RETRACT
Synonyms
abjure, recant, renounce, retract, take back, withdraw—more at ABJURE
un·scathed adjective : wholly unharmed : not injured
un·schooled adjective : not schooled : UNTAUGHT
un·sci·en·tif·ic adjective : not scientific : not in accord with the principles and methods of science
un·scram·ble verb 1 : RESOLVE, CLARIFY
2 : to restore (as a radio message) to intelligible form
un·screw verb 1 : to draw the screws from
2 : to loosen by turning
un·scru·pu·lous adjective : not scrupulous : UNPRINCIPLED
— un·scru·pu·lous·ly adverb
— un·scru·pu·lous·ness noun
Synonyms
cutthroat, immoral, Machiavellian, unconscionable, unethical, unprincipled—more at UNPRINCIPLED
un·seal verb : to break or remove the seal of : OPEN
un·search·able adjective : not capable of being searched or explored
un·sea·son·able adjective : not seasonable : happening or coming at the wrong time : UNTIMELY
Synonyms
early, precocious, premature, untimely—more at EARLY
un·sea·son·ably adverb : in an unseasonable manner : at an unseasonable time
Synonyms
beforehand, early, precociously, prematurely—more at EARLY
un·seat verb 1 : to throw from one's seat esp. on horseback
2 : to remove from political office
un·seem·ly adjective 1 : not according with established standards of good form or taste
2 : not suitable
— un·seem·li·ness noun
Synonyms
graceless, improper, inapt, incongruous, incorrect, indecorous, inept, infelicitous, unbecoming, unfit, unhappy, unsuitable, wrong
un·seen adjective : not seen : INVISIBLE
un·seg·re·gat·ed adjective : not segregated; especially : free from racial segregation
un·self·ish adjective : not selfish : GENEROUS
— un·self·ish·ly adverb
Synonyms
bountiful, charitable, free, generous, liberal, munificent, openhanded, unsparing—more at GENEROUS
un·self·ish·ness noun : the quality or state of being unselfish
Synonyms
bounty, generosity, largesse, liberality, philanthropy—more at LIBERALITY
un·set·tle verb 1 : to move or loosen from a settled position : DISPLACE
2 : to perturb or agitate mentally or emotionally
Synonyms
agitate, bother, concern, discompose, disquiet, distress, disturb, exercise, freak, perturb, undo, unhinge, upset, worry
un·set·tled adjective 1 : not settled : not fixed (as in position or character)
2 : not calm : DISTURBED
3 : not decided in mind
4 : not paid <~ accounts>
5 : not occupied by settlers