The proper form for saying one likes an object or individual. The "E" sound is extended to convey more like of the object or individual. Also, an "ah" sound can be added before the word to show great emphasis and character.
1: Man 1: Did you see that female that just walked by?
Man 2: dece
Man 1: very dece
2: Swans A: What kind of beer is that?
Swans B: Ah, a PBR.
Swans A: Ah, dece.