uncoalesce means to separate from a coalesced state. Lexicurio rates it Rare gem — a strength score of 81 out of 100.
Etymology
From un- + coalesce.
verb
- To separate from a coalesced state.“It is clear that what sound change has coalesced, sound change cannot uncoalesce; and the probability is vanishingly small that analogy and borrowing should proceed in such a way as to restore just the situation that had pertained before the restructuring.”