IPA: /kənˈtɛmptʃuəsli/
KK: /kənˈtɛmptʃuəsli/
In a way that shows a lack of respect or regard for someone or something; in a scornful manner.
She spoke contemptuously about the rules, as if they didn't apply to her.
Contemptuously → It is formed from "contempt" (from Latin *contemptus*, meaning scorn or disdain) and the suffix "-ously" (meaning in a manner characterized by). The word "contemptuously" means in a manner that shows scorn or disdain.
Think of showing 'scorn' ('contempt') in a certain way ('-ously') — that's how you remember that 'contemptuously' means to act with disdain.