Flat - flatter - the flattest far - farther/further - the farthest/furthest funny - funnier - the funniest late - later - the latest hot - hotter - the hottest weak - weaker - the weakest young - younger - the youngest red - redder - the reddest early - earlier - the earliest favourite - more favourite - the most favourite little - less - the least comfortable - more comfortable - the most comfortable bitter - more bitter - the most bitter active - more active - the most active
far - farther/further - the farthest/furthest
funny - funnier - the funniest
late - later - the latest
hot - hotter - the hottest
weak - weaker - the weakest
young - younger - the youngest
red - redder - the reddest
early - earlier - the earliest
favourite - more favourite - the most favourite
little - less - the least
comfortable - more comfortable - the most comfortable
bitter - more bitter - the most bitter
active - more active - the most active