conceivably
adverb C1- In a conceivable manner; possibly.
From the library
The vendetta might conceivably date back to the man’s first marriage, and the ring be taken for some such reason.
A man who had read deeply about Napoleon, or who had possibly received some hereditary family injury through the great war, might conceivably form such an idée fixe and under its influence be capable of any fantastic outrage.”
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