Function: adverb
Etymology: Middle English, from Old English thy ̄ by that, instrumental of thæt that
Date: before 12th century
1 : than before : than otherwise ― used before a comparative <none the wiser for attending>
2 a : to what extent < the sooner the better> b : to that extent <the sooner the better>
3 : beyond all others <likes this the best>