The term 'impertinent one' is used to describe someone who is rude or disrespectful. The crossword solutions for this term are TWERP (5 letters), OGLER (5 letters), SNIP (4 letters), presumer (8 letters), and JACKANAPES (10 letters). A TWERP is someone who is annoying or foolish. An OGLER is someone who stares at someone else in a rude or inappropriate way. A SNIP is someone who is short-tempered or sharp-tongued. A presumer is someone who assumes something without any evidence. Finally, a JACKANAPES is someone who is arrogant or conceited.