Similar words: expertness, alertness, inertness, covertness, tartness, curtness, shortness, smartness. Meaning: ['pɜrtnɪs /'pɜː-] 
n. 1. inappropriate playfulness 2. quality of being lively and confident.
n. 1. inappropriate playfulness 2. quality of being lively and confident. 
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1. Colonel Fergusson nodded indulgently at such pertness and obstinacy, but held his peace.
2. There was a pertness about her that attracted him.
3. The shining coxcomb aims at all, and decides finally upon everything, because nature has given him pertness.
4. He many a time spoke sternly to me about my pertness; and averred that the stab of a knife could not inflict a worse pang than he suffered at seeing his lady vexed.
5. I've got your letters, and if you give me any pertness I'll send them to your father.
More similar words: expertness, alertness, inertness, covertness, tartness, curtness, shortness, smartness, expert witness, earnestness, hotness, fitness, aptness, witness, fatness, wetness, deftness, fastness, justness, softness, neatness, vastness, stoutness, flatness, swiftness, tightness, fleetness, quietness, devoutness, lightness.