Capricious
Inconstant, fickle
Mundane
Unremarkable, stale
Squandered
Dissipated, wastef
Plausible
Logical, believable
Copiousness
Abundance, plenty
Pervasive
Corrupted, extensive
Nonplussed
Mystified, perplexed
Flamboyant
Vibrant, exuberant
Abjure
Relinquish, reject