The Collaborative International Dictionary of English v.0.48:

Unquiet \Unquiet\
   See quiet.

The Collaborative International Dictionary of English v.0.48:

Unquiet \Un*qui"et\, v. t. [1st pref. un- + quiet.]
   To disquiet. [Obs.] --Ld. Herbert.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Unquiet \Un*qui"et\, a. [Pref. un- + quiet.]
   Not quiet; restless; uneasy; agitated; disturbed. --
   Un*qui"et*ly, adv. -- Un*qui"et*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

unquiet
    adj 1: characterized by unrest or disorder; "unquiet days of
           riots"; "following the assassination of Martin Luter King
           ours was an unquiet nation"; "spent an unquiet night
           tossing and turning" [ant: quiet]
    2: causing or fraught with or showing anxiety; "spent an anxious
       night waiting for the test results"; "cast anxious glances
       behind her"; "those nervous moments before takeoff"; "an
       unquiet mind" [syn: anxious, nervous, queasy, uneasy,
       unquiet]

Moby Thesaurus II by Grady Ward, 1.0:

74 Moby Thesaurus words for "unquiet":
   agitated, anguished, antsy, antsy-pantsy, anxious, bored,
   breathless, bustling, chafing, cheerless, depressed, discomposed,
   disgusted, disquieted, disturbed, eager, edgy, excited, feverish,
   fidgety, flurried, flustered, fluttering, fluttery, fretful,
   fretting, fussing, fussy, grim, hasty, hopped-up, impatient,
   impetuous, in a lather, in a stew, in a sweat, jittery, joyless,
   jumpy, nauseated, nauseous, nervous, nervy, on edge, perturbed,
   pleasureless, prey to malaise, repelled, restive, restless,
   revolted, ruffled, sad, shaken, shaken up, sickened, squirming,
   squirmy, stirred up, suffering angst, tense, troubled, troublous,
   turbulent, uneasy, unfulfilled, ungratified, unhappy, unpatient,
   unpeaceful, unrestful, unsatisfied, unsettled, upset