Tune, tone, pitch, or rhythm: the character or mood of a piece of music or the tone of speech.
この曲は明るい調子で始まる。
This piece starts in a bright/timely tone.
話の調子が変わって急に真剣になった。
The tone of the conversation changed and suddenly became serious.
歌手は曲の調子に合わせて声色を変えた。
The singer changed their tone of voice to match the song's mood.
Mood, manner, or knack: the way something is done or a person's style/approach; also one's disposition or mood.
彼は料理の調子が良く、短時間で美味しい料理を作った。
He was in good form cooking and made a delicious meal in a short time.
話し始めの調子が軽かったので、すぐに場が和んだ。
Because his opening tone was light, the atmosphere quickly relaxed.
彼女は説明の調子がいつもわかりやすい。
Her way of explaining is always easy to understand.
Condition or state of health: how someone or something (e.g., a machine) is functioning or feeling.
今日はあまり調子が良くないので早めに帰ります。
I'm not feeling well today, so I'll go home early.
パソコンの調子が悪くて作業が進まない。
The computer is acting up, and I can't make progress on my work.
最近、彼の体の調子が戻ってきたようだ。
Lately it seems his health has improved.
Impetus or momentum: acting on a spur of the moment or riding the current momentum/enthusiasm.
彼は調子に乗って余計なことを言ってしまった。
He got carried away and said something he shouldn't have.
その調子で行けば、プロジェクトは順調に進むだろう。
If things keep going like this, the project should proceed smoothly.
Trend: the general direction or tendency of something (e.g., market, performance).
最近の景気の調子を見ると回復傾向にある。
Looking at the recent economy, there is a recovery trend.
売上の調子が良ければ、来年は拡大を考えたい。
If sales are strong, we'd like to consider expanding next year.