tolerable
This term carries a distinct sense of mediocrity or minimal adequacy. When describing quality, it suggests a lukewarm approval, implying that while something is not bad enough to be rejected, it is far from being praised. It often functions as a polite euphemism for something that is barely acceptable.
In the context of endurance, the word describes a threshold of pain or discomfort that can be managed. It focuses on the capacity of the subject to withstand a negative stimulus without breaking or surrendering, rather than the absence of the stimulus itself.
Meanings
Capable of being endured or accepted without causing excessive distress or hardship.
The heat in the room was barely tolerable.
Of a quality that is acceptable or satisfactory, though not particularly good or impressive.
The food at the hotel was tolerable, but not gourmet.