Formal:
* Acceptable: Indicates that something meets a standard or is satisfactory.
* Satisfactory: Similar to acceptable, it implies a sufficient level of quality.
* Permissible: Indicates that something is allowed or permitted.
* Admissible: Similar to permissible, often used in legal contexts.
* Approved: Indicates official acceptance or agreement.
* Agreed: Indicates that parties have come to a shared understanding.
Informal:
* Okay: The most common informal equivalent of "all right."
* Fine: Similar to okay, but often used to express a neutral agreement.
* Sure: Indicates willingness or agreement, often used as a positive response.
* Good: Indicates approval or satisfaction.
* No problem: Indicates willingness to do something or that there is no objection.
* Cool: Indicates agreement or approval, often used by younger people.
* Sweet: Similar to cool, often used in informal settings.
* Alright: A slightly more informal variation of "all right."
Other:
* In order: Used to indicate that something is functioning properly or as intended.
* In good shape: Used to describe something that is in good condition.
* In good working order: Used to describe something that is functioning properly.
* Sound: Similar to "in good shape," used to describe something that is in good condition.
* Well: Can be used as a synonym for "all right" in certain contexts.
The best word to use will depend on the specific situation and the level of formality you want to convey.