There are several synonyms for the phrase "is acceptable". Some of these include "is alright", "is satisfactory", "is adequate", "is passable", and "is suitable". These synonyms are commonly used to express the idea that something is satisfactory or adequate, without necessarily being exceptional or outstanding. When using synonyms for "is acceptable", it's important to consider the context and tone of the conversation, as well as the intended audience. For example, using more formal or technical terms like "is up to standard" or "meets the required criteria" may be more appropriate in some professional settings. Ultimately, choosing the right synonym for "is acceptable" can help to convey a specific message or tone in your communication.