on sour note (adjective) discordant: not in harmony; conflicting
Sinonime: bottomless,
flimsy, foundationless, gratuitous, groundless, reasonless, unconfirmed, uncorroborated,
unfounded, ungrounded, unjustifiable, unjustified, unsubstantiated, unsupported,
untenable, unwarranted
Antonime: based