Unwitting
Unaware, ignorant
Umbrage
Annoyance, offence
Serrated
Jagged edge
Debris
Litter, waste
Pristine
Flawless, clean
Vapid
Colourless, boring
Oscillation
Vibration, swinging
Unilateral
Independent
Petulant
Moody, irritable
Requisite
Needful, necessary
Propelled
Thrusted, projected
Indolent
Lifeless, dull
Retrospective
Backdated
Tenacious
Strong, tight