IPA: /dɪˈlɪr.i.əs/
KK: /dɪˈlɪrɪəs/
Experiencing extreme excitement or happiness, often to the point of being unable to think clearly.
After winning the championship, the team was delirious with joy.
Delirious → It is formed from "de-" (meaning away) and "lirare" (from Latin, meaning to be frenzied or to be out of one's senses). The word describes a state of being away from one's senses, often characterized by confusion or excitement.
Think of being 'away' ('de-') from your normal state of mind, which helps you remember that 'delirious' means being in a confused or frenzied state.