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an organization of independent states to promote international peace and security

Un- is prefixed to adjectives, or to words used adjectively.

To adjectives, to denote the absence of the quality designated by the adjective

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

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.

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.

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 prefixed to nouns to express the absence of, or the contrary of, that which the noun signifies; as, unbelief, unfaith, unhealth, unrest, untruth, and the like.

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.

To adjectives, to denote the absence of the quality designated by the adjective

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

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.

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.

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.

is prefixed to adjectives, or to words used adjectively.

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.

is prefixed to nouns to express the absence of, or the contrary of, that which the noun signifies; as, unbelief, unfaith, unhealth, unrest, untruth, and the like.

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;

An international organization whose members include most of the sovereign nations of the world with headquarters in New York City. The primary objectives of the organization are to maintain peace and security and to achieve international cooperation in solving international economic, social, cultural, or humanitarian problems.

A prefix meaning not; also expressing undoing of the action or condition implied in the word: used before almost any adjective, participle, or adverb, thus forming a large number of words, of which only the most important are here included.

A negative prefix, signifying not, or the want of, which may be attached to nouns, adjectives, adverbs, verbs, and participles. When applied to nouns, adjectives, or participles when used adjectively, it usually denotes the absence of the state, quality, or condition expressed by the simple word, as unhappiness, unhappy, unfeeling, unarmed. When applied to adverbs, it denotes the negation of the modification expressed by the adverb, as unhappily. Applied to transitive verbs, or their participles, it usually denotes an undoing or reversal of the action expressed by the simple word, as unbind, unlock. Words beginning with un-, not found below, may be explained by adding not, or want of, to the simple word, or as indicated above.

Not; used to express negation, incompleteness, or opposition.

Back; used to express the reversal of the action of the verb.