いったん一旦ittan
1.
Describes a situation where a certain action or state temporarily pauses or is put on hold, implying a future resumption or continuation.
2.
Indicates that once a specific condition is met or an action is taken, it is difficult or impossible to revert to the previous state, suggesting a critical turning point.
3.
Refers to a momentary occurrence, emphasizing that the situation is fleeting and may not last beyond a brief period.
Example:
いったんしたことは元どおりにならない。