계획

The occurrence of an event by chance without an apparent cause, plan, or intention.

A higher rank, position, or category in a hierarchy or list.

A lower rank, position, or category in a hierarchy or list.

By chance, accidentally, or unexpectedly. Often used in TOEFL listening narratives or history passages about accidental discoveries.

Practical use or utility; the quality of being useful in real-life situations rather than just being theoretical.

Successful in producing a desired or intended result; effective.

A favorable time or set of circumstances for doing something; an opportunity.

To be unavoidable or inevitable. It is used to describe situations where a certain outcome cannot be prevented due to circumstances.

To persistently aim for or try to reach a goal, ideal, or value. It implies a long-term endeavor toward something abstract like happiness or profit.

To be timely or opportune; being appropriate for the current time or situation.