expression, godan verb (-ru)
get carried away; get cocky; get overly elated
Describes someone becoming overconfident, overly excited, or acting presumptuously because things are going well. Often used as a warning or criticism.
彼は最近成功して、すっかり調子に乗っている。
He's been successful lately and has gotten completely carried away.
調子に乗って言い過ぎた。
I got carried away and said too much.
expression, godan verb (-ru)
get up to speed; get into gear
Less common; used when someone or something starts performing well or gets into a good rhythm. Often appears in contexts like work, sports, or machinery.
エンジンが温まって、ようやく調子に乗ってきた。
The engine warmed up and finally got into gear.
彼は午後になって調子に乗り、仕事がはかどった。
He got up to speed in the afternoon and made good progress on his work.