insipid   
boka
exhausted, spent, spoiled, worn out, tasteless, insipid, unsavoury; proved to be false; to have lost one's title, position, or honour [1.2]
bokaboka
insipid. (Prov.) [1.2]
lefy
insipid [1.7]
fade, insipide; qui a perdu ses propriétés [1.8]