An Etymological Dictionary of the German Language/gätlich

by Friedrich Kluge

gätlich, adj., ‘suitable, convenient,’ an essentially MidG. and LG. word; derived from a parallel Goth. form *gada-, to which OHG. gi-gát, adj., ‘suitable, agreeing with,’ also points; comp. Gatte, gut; so too OSlov. godŭ, ‘favourable time,’ Lith. gadas, ‘stipulation,’ and Du. gadelijk, ‘reconcilable.’