I. (ˈ)im, əm+ adjective
Etymology: Middle English, from Middle French, from Late Latin impertinent-, impertinens, from Latin in- in- + I pertinent-, pertinens, present participle of pertinēre to reach out, extend, pertain — more at : pertain
1.
a. : not pertinent : not significantly belonging or related to the matter in hand : irrelevant , inapplicable
should rigidly exclude courses of study impertinent to their central purposes — H.W.Sams
b. obsolete : not suitable or congruous : inappropriate
c. archaic : frivolous , foolish
2. : not restrained within the due or proper bounds especially of propriety or good breeding in words or actions : guilty of or prone to rudeness or incivility
a child taught not to make impertinent remarks to his elders
approach complete strangers, ask them a battery of impertinent questions — S.L.Payne
Synonyms:
impertinent , officious , meddlesome , intrusive , obtrusive : impertinent implies a concerning of oneself offensively with what is another's business
all that had occurred to make my former interference in his affairs absurd and impertinent — Jane Austen
we were secure from all impertinent interference in our concerns — Herman Melville
something so extremely impertinent in entering upon a man's premises, and using them without paying — William Cowper
officious implies an offering of unwelcome or offensive services, attentions, or assistance
cannot walk home from office, but some officious friend offers his unwelcome courtesies to accompany me — Charles Lamb
had no desire to call in a detective for fear the man might become an officious nuisance
: meddlesome stresses an annoying and usually prying interference in others' business
turns with scorn upon the Abolitionists and their meddlesome interference with the beneficent ways of Providence — V.L.Parrington
a vain, meddlesome vagabond, and must needs pry into a secret which certainly did not concern him — Charles Kingsley
intrusive applies to one who has or something that reveals a disposition to be unduly curious about another's business
made an inconspicuous fourth in their small world, always at hand yet never intrusive — B.A.Williams
to protect oneself by silence from well-meaning but intrusive friends
obtrusive is like intrusive but usually stresses more objectionable actions than a disposition, suggesting an undue, improper, or offensive conspicuousness of interference
she knelt and watched, quietly, without expressing any obtrusive concern for his safety — Floyd Dell
the obtrusive attentions of sycophants and henchmen
II. noun
: an impertinent person : one that is presumptuous, meddlesome, or insolent