Answer:

mellow

Answer	Crossword Clue
MELLOW	Relaxed
MELLOW	Become less stressed, with "out"
MELLOW	Laid-back

MELLOW	Easygoing
MELLOW	Full-flavored.
MELLOW	Like fine cheese.
MELLOW	Ripen.
MELLOW	Fully matured
MELLOW	Soft, sweet and juicy
MELLOW	Full-flavored
MELLOW	Tone down

MELLOW	Hardly harsh
MELLOW	Beck breakthrough "... Gold"
MELLOW	Ripe plus
MELLOW	Soft and sweet
MELLOW	Chilled out
MELLOW	Become less stressed (with "out")