Lacking the necessary power, authority, or means; not able; incapable, Not able; not having sufficient strength, means, knowledge, skill, or the like; impotent; weak; helpless; incapable; -- now usually followed by an infinitive or an adverbial phrase, Not able; lacking a certain ability

not having any authority, without official authorization, not endowed with authority

Not available, accessible, or at hand, not available or accessible or at hand, noun_ US, history A communist who operated underground and was therefore not available for a political leadership position

The condition of being uncertain; doubt, Of persons_ a state of doubt; a state in which one knows not what to think or do; hesitation; irresolution, uncountable doubt; the condition of being uncertain or without conviction

The husband of a sibling of one's mother or father, Used as a form of address for an older man, especially by children, The brother of one's father or mother; also, the husband of one's aunt_ correlative to aunt

obsolete, rare A wave, heraldry A billow- or wave-like marking

not precisely limited, determined, or distinguished, Lacking a definition or value, mathematics That does not have a meaning and is thus not assigned an interpretation

To or into a lower position or place than, Less than the required amount or degree of, Subject to the supervision, instruction, or influence of, adverb_ So as to be less than the required amount or degree, In or into a place below or beneath, So as to be rendered unconscious, as by an anesthetic, adjective_ Lower in rank, power, or authority; subordinate, Less than is required or customary, \ Located or situated on a lower level or beneath something else

A member of a university or a college who has not taken his first degree; a student in any school who has not completed his course. Contrasted with graduate student, A student at a university who has not yet received a degree, A college or university student who has not yet received a bachelor's or similar degree, adjective_ Of, relating to, or characteristic of undergraduates, Having the standing of an undergraduate, Of, relating to, or being an undergraduate

Situated, occurring, or operating below the surface of the earth, Of or relating to an avant-garde movement or its films, publications, and art, usually privately produced and of special appeal and often concerned with social or artistic experiment, Being below the surface of the ground, adverb_ Beneath the surface of the earth, Below the ground, in or into hiding or secret operation, noun_ a secret group organized to overthrow a government or occupation force, a group or movement holding unorthodox views in an environment where conventional ideas dominate, as in artistic circles, An underground passage, verb_ To route electricity distribution cables underground, transitive verb_ To situate under the ground