unconsciously and innocently
uncouth and barbarous
unctuous and irresistible [trenchant = insincere earnestness]
undeveloped and ignorant
undignified and futile
uneasiness and apprehension
uneducated and inexperienced
unfamiliar and distant
unfettered and vigorous
unforced and unchecked
unfortunate and unparalleled
unfounded and incredible
ungracious and reluctant
unhappiness and discomfort
unique and original
unity and completeness
unjust and ungrateful
unlimited and absolute
unnatural and harmful
unobserved and unsuspected
unobtrusive and tactful
unparalleled and inexhaustible
unpleasant and bewildering
unpopular and unimpressive
unprecedented and objectionable
unpremeditated and heartfelt
unpromising and scanty
unprotected and friendless
unreal and unsubstantial
unreasoning and uncompromising
unrecognized and unrewarded
unseemly and insufferable
unseen and unsuspected
unsmiling and critical
unswerving and unfaltering
unthinking and careless
untutored and infantine
unusual and unexpected
unuttered and unutterable
unwholesome and vile
upright and credible
uproar and confusion
upstart and braggart
urbanity and unction [unction = exaggerated earnestness]
utter and disastrous
V
vacillation and uncertainty
vague and indistinct
vain and profitless
validity and value