depending on the situation; according to circumstances
Used when a decision or action will be made after seeing how things develop. Often appears in phrases like 様子次第で決める.
I'll decide whether to go out depending on tomorrow's weather.
Depending on how the meeting goes, we might change the plan.
次第 is a suffix meaning 'depending on' or 'as soon as'. 様子次第 is a specific compound using 次第 with 様子 (situation).
Compound of 様子 (state, situation) and 次第 (depending on).