Englishdeduce
verb
from the observation of fossils, he deduced that the whole Earth had once been covered by water:
conclude, come to the conclusion, reason, work out, gather, infer, draw the inference;
extrapolate, glean, divine, intuit, come to understand, understand, assume, presume, conjecture, surmise, reckon, dare say;
North American figure;
informal suss out.