Aberration

9 clues
Oddity
Anomaly
Deviation
Wandering
Eccentricity
Irregularity
Mental lapse
Delusion or illusion
Deviation from the proper course
Similar answers:
Abbreviation
Abbreviations
Aberrance
Aberrancy
Aberrant
Aberrantly
Aberrate
Aberration
Aberrations
Abjuration
Ablation
Abomination
Acceleration
Accreditation
Accumulation
Accusation
Accusations
Acestationzebra
Acmecorporation
Acrossthenation