1) Acidified 2) Became bad 3) Became bitter 4) Became disenchanted 5) Became disillusioned 6) Became rancid 7) Became unpleasant 8) Fermented 9) Gone bad 10) Hard 11) Having turned bad 12) Made rancid 13) Sour 14) Spoiled 15) Turned 16) Turned bad 17) Went bad 1) Acidified 2) Fermented 
• (imp. & p. p.) of Sour
[adj] - having turned bad
adjective having turned bad