uneasy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Lacking a sense of security; anxious or apprehensive.
• adjective Affording no ease or reassurance.
• adjective Awkward or unsure in manner; constrained.
• adjective Causing constraint or awkwardness.
• adjective Not conducive to rest.

from The Century Dictionary.

• Not easy either in body or in mind; feeling some lack of ease, either mental or physical; disturbed; unquiet.
• Not easy or elegant in manner or style; not graceful; constrained; stiff; awkward.
• Causing pain, trouble, constraint, discomfort, or want of ease; cramping; constraining; irksome; disagreeable.
• Not easy to be done or accomplished; difficult.

from the GNU version of the Collaborative International Dictionary of English.

• adjective rare Not easy; difficult.
• adjective Restless; disturbed by pain, anxiety, or the like; disquieted; perturbed.
• adjective Not easy in manner; constrained; stiff; awkward; not graceful.
• adjective Occasioning want of ease; constraining; cramping; disagreeable; unpleasing.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective rare Not easy; difficult.
• adjective Restless; disturbed by pain, anxiety, or the like; disquieted; perturbed.
• adjective Not easy in manner; constrained; stiff; awkward; not graceful; as, an uneasy deportment.
• adjective Occasioning want of ease; constraining; cramping; disagreeable; unpleasing.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective socially uncomfortable; unsure and constrained in manner
• adjective causing or fraught with or showing anxiety
• adjective lacking or not affording physical or mental rest
• adjective relating to bodily unease that causes discomfort
• adjective lacking a sense of security or affording no ease or reassurance