1) Clarify 2) Clear up 3) Elucidate 4) To make less ambiguous 5) To remove ambiguities from 6) To remove the ambiguity from 
October 11: Recent days: October 10 – October 9 – October 8 ...
[v] - state unambiguously or remove ambiguities from
verb state unambiguously or remove ambiguities from; `Can you disambiguate this statement?`
to remove the ambiguity from; make unambiguous: In order to disambiguate the sentence “She lectured on the famous passenger ship,” you'll have to write either “lectured on board” or “lectured about.”