Open-ended (adjective)

1. Not having a fixed limit or end.
2. Not having a specific outcome.

Origin:

the phrase open-ended means that something is not limited to a specific time frame or ending. in this sense, it is a compound word, made up of the words open and ended.

Examples:

1. The discussion was open-ended, allowing for a wide range of perspectives.
2. The project was open-ended, with no set end date.
3. The question was open-ended, allowing for a variety of answers.
4. The contract was open-ended, allowing for renegotiation at any time.
5. The agreement was open-ended, allowing for future expansion.