Someone who is delirious is unable to think or speak in a sensible and reasonable way, usually because they are very ill and have a fever.
I was delirious and blacked out several times.
我当时神志不清,昏过去好几次。
Someone who is delirious is extremely excited and happy.
A raucous crowd of 25,000 delirious fans greeted the team at Grand Central Station.
25000名狂热的球迷欢呼雀跃地在格兰德中心车站欢迎球队。