WORD...

anomaly:
[uh-nom-uh-lee]

-noun

1. a deviation from the common rule, type, arrangement, or form.

2. someone or something anomalous...

3. an odd, peculiar, or strange condition, situation, quality, etc.

origin:

1565-75;< Latin anomalia < Greek anomalia, equilvalent to anomal (os) anomalous + -ia-ia