discourteously (part of speech: adverb)
extraneously (part of speech: adverb)
extraneously, exotically, inapplicably, immaterially, irrelevantly, inappropriately, separately, outlandishly, externally, extrinsically, parenthetically, strangely, disjointedly, inadmissibly, remotely
insolently (part of speech: adverb)
discourteously, saucily, irreverently, flagrantly, presumptuously, callously, arrogantly, impolitely, contemptuously, audaciously, insolently, brashly, defiantly, boldly, outrageously, rudely, sarcastically, brazenly, mouthily, disrespectfully, derisively
disrespectfully (part of speech: adverb)
- So home and find my boy a very schoole boy, that talks innocently and impertinently, but at present it is a sport to us, and in a little time he will leave it. - "Diary of Samuel Pepys, Complete Transcribed From The Shorthand Manuscript In The Pepysian Library Magdalene College Cambridge By The Rev. Mynors Bright", Samuel Pepys Commentator: Lord Braybrooke.
- She nodded impertinently to both the girls, and then reentered the school. - "The Rebel of the School", Mrs. L. T. Meade.
- She behaved very impertinently." - "A Singer from the Sea", Amelia Edith Huddleston Barr.