Longman Dictionary of Contemporary English - eccentric

~1 adj 1 behaving or appearing in a way that is unusual and different from most people  (students dressed in eccentric clothing | an eccentric old woman) 2 technical eccentric circles do not have the same centre point  (- compare concentric) - eccentrically adv ~2 n someone who behaves in a way that is different from what is usual or socially accepted  (I was regarded as something of an eccentric.)