In a manner that can be assumed or supposed; presumably or reasonably believed to be true.
From 'assumable' plus the adverbial suffix '-ly.' This adverb form allows 'assumable' to modify verbs and entire clauses, making it useful in conditional or tentative statements about what seems reasonable to suppose.
Interestingly, 'assumably' appears more in scientific and academic writing than everyday speech—scientists use it when they want to be less committal than 'certainly' but more confident than 'possibly,' creating a precise epistemic hedge that helps readers understand the writer's confidence level.
Complete word intelligence in one call. Free tier — 50 lookups/day.