Ugh (in)
definition: An exclamation expressive of disgust
Horror or recoil. Its utterance is usually accompanied by a shudder.
Ugh is a 3 letter word that begins with a U and ends in a H

Ule (n.)
definition: A Mexican and Central American tree (Castilloa elastica and C. Markhamiana) related to the breadfruit tree. Its milky juice contains caoutchouc. Called also ule tree.

Ule is a 3 letter word that begins with a U and ends in an E

Un-
definition: An inseparable verbal prefix or particle. It is prefixed: (a) To verbs to express the contrary
And not the simple negative of the action of the verb to which it is prefixed; as in uncoil undo unfold. (b) To nouns to form verbs expressing privation of the thing quality or state expressed by the noun or separation from it; as in unchild, unsex. Sometimes particles and participial adjectives formed with this prefix coincide in form with compounds of the negative prefix un- (see 2d Un-); as in undone (from undo), meaning unfastened, ruined; and undone (from 2d un- and done) meaning not done, not finished. Un- is sometimes used with an intensive force merely; as in unloose.
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: An inseparable prefix
Or particle signifying not; in-; non-. In- is prefixed mostly to words of Latin origin or else to words formed by Latin suffixes; un- is of much wider application and is attached at will to almost any adjective or participle used adjectively or adverb from which it may be desired to form a corresponding negative adjective or adverb, and is also, but less freely, prefixed to nouns. Un- sometimes has merely an intensive force; as in unmerciless, unremorseless.
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: Those which are anomalous
Provincial or for some other reason not desirable to be used and are so indicated; as unpure for impure unsatisfaction for dissatisfaction, unexpressible for inexpressible, and the like.
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: Those which have acquired an opposed or contrary
Instead of a merely negative meaning; as unfriendly ungraceful unpalatable unquiet and the like; or else an intensive sense more than a prefixed not would express; as, unending, unparalleled, undisciplined, undoubted, unsafe, and the like.
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: Those which have the value of independent words
Inasmuch as the simple words are either not used at all or are rarely or at least much less frequently used; as unavoidable unconscionable undeniable, unspeakable, unprecedented, unruly, and the like; or inasmuch as they are used in a different sense from the usual meaning of the primitive, or especially in one of the significations of the latter; as, unaccountable, unalloyed, unbelieving, unpretending, unreserved, and the like; or inasmuch as they are so frequently and familiarly used that they are hardly felt to be of negative origin; as, uncertain, uneven, and the like.
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: To adjectives
To denote the absence of the quality designated by the adjective
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: To past particles
Or to adjectives formed after the analogy of past particles to indicate the absence of the condition or state expressed by them
Un- is a 3 letter word that begins with a U and ends in a -

Un- (ad)
definition: To present particles which come from intransitive verbs
Or are themselves employed as adjectives to mark the absence of the activity disposition or condition implied by the participle; as - ---- and the like.
Un- is a 3 letter word that begins with a U and ends in a -

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