adverb and noun as in strong fondness

Word Combinations

Example:Thitherto, the analysis of renewable energy has been biased towards solar and wind power, with other technologies largely overlooked.

Definition:Viewed or considered up to this point in time.

From thitherto viewed

Example:Thitherto unknown archaeological findings have shed new light on the cultural exchanges during the early Han Dynasty.

Definition:Unknown up to this point in time.

From thitherto unknown