IPA: /dɪˈluːsɪvli/
KK: /dɪˈluːsɪvli/
In a way that is misleading or deceptive, causing someone to believe something that is not true.
He delusively thought he could win the game without practicing.
Delusively → It is formed from "delude" (from Latin "deludere", meaning to mock or deceive) and the suffix "-ly" (meaning in a manner of). The word "delusively" means in a manner that deceives or misleads.
Think of someone who is 'mocking' or 'deceiving' ('delude') and doing it 'in a manner' ('-ly'). This helps you remember that 'delusively' refers to the way someone misleads.