Able to be endured or tolerated; bearable.
From Latin comportare, 'to bear together' (com- 'together' + portare 'to carry'), plus the suffix -able. Evolved to mean 'tolerable' in English by the 16th century.
This archaic word is the positive form of comport—while we don't use comportable much anymore, understanding it shows how English once had different words for different grades of bearability.
Complete word intelligence in one call. Free tier — 50 lookups/day.