In a manner that shows forbearance; with patience and restraint.
From 'forbearant' + '-ly' (manner adverb). The '-ly' suffix comes from Old English '-lice,' originally meaning 'like' or 'in the manner of.'
Adding '-ly' to adjectives to make adverbs is so automatic for English speakers that we barely notice it—but it's such a powerful pattern that even made-up adjectives instantly become adverbs when you add it.
Complete word intelligence in one call. Free tier — 50 lookups/day.