to feel very happy and excited
とても幸せで興奮している気分になる (totemo shiawase de koufun shiteiru kibun ni naru)
"After winning the match, he was walking on air."
"試合に勝った後、彼はとても幸せだった。" (shiai ni katta ato kare wa totemo shiawase datta)
to become aware or informed about something
to make a sincere promise
crazy or extremely worried
very stupid or slow-witted
to be honest and kind in feelings and actions
to just barely manage to do something