DictionaryRoot: solere
Latin
solere
to be accustomed
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noun
insolence
IN-suh-lens/ˈɪnsələns/
Rude or disrespectful behavior or speech.
Etymology
The pieces originally express being “not accustomed” or unusual. Latin extended this to excess and immoderation, then haughtiness and arrogance—the bridge to disrespectful boldness.