curious, meddlesome, peeping, scrutinizing, inquiring, meddling, prying, searching. intrusive,
An _inquisitive_ person is one who is bent on finding out all that can be found out by inquiry, especially of little and personal matters, and hence is generally _meddlesome_ and _prying_. _Inquisitive_ may be used in a good sense, tho in such connection _inquiring_ is to be preferred; as, an _inquiring_ mind. As applied to a state of mind, _curious_ denotes a keen and rather pleasurable desire to know fully something to which one's attention has been called, but without the active tendency that _inquisitive_ implies; a well-bred person may be _curious_ to know, but will not be _inquisitive_ in trying to ascertain, what is of interest in the affairs of another.
apathetic, heedless, indifferent, unconcerned, uninterested. careless, inattentive,
Inquisitive _about_, _concerning_, _in regard to_, _regarding_ trifles.
aberration, delirium, frenzy, madness, alienation, dementia, hallucination, mania, craziness, derangement, lunacy, monomania.
Of these terms _insanity_ is the most exact and comprehensive, including in its widest sense all morbid conditions of mind due to diseased action of the brain or nervous system, but in its more frequent restricted use applied to those forms in which the mental disorder is persistent, as distinguished from those in which it is temporary or transient. _Craziness_ is a vague popular term for any sort of disordered mental action, or for conduct suggesting it. _Lunacy_ originally denoted intermittent _insanity_, supposed to be dependent on the changes of the moon (L. _luna_): the term is now applied in general and legal use to any form of mental unsoundness except idiocy. _Madness_ is the old popular term, now less common, for _insanity_ in its widest sense, but with suggestion of excitement, akin to _mania_. In the derived sense, _lunacy_ denotes what is insanely foolish, _madness_ what is insanely desperate. _Derangement_ is a common euphemism for _insanity_. _Delirium_ is always temporary, and is specifically the _insanity_ of disease, as in acute fevers. _Dementia_ is a general weakening of the mental powers: the word is specifically applied to senile _insanity_, dotage. _Aberration_ is eccentricity of mental action due to an abnormal state of the perceptive faculties, and is manifested by error in perceptions and rambling thought. _Hallucination_ is the apparent perception of that which does not exist or is not present to the senses, as the seeing of specters or of reptiles in delirium tremens. _Monomania_ is mental _derangement_ as to one subject or object. _Frenzy_ and _mania_ are forms of raving and furious _insanity_. Compare synonyms for DELUSION; IDIOCY.