Oriented vs. orientated / disoriented vs. disorientated
Are these variants all valid or do you think some are more "correct" than others? I asked the Googles but they seem to be torn over it. Some say "orientate" is a redundant "back-formation" while others say it's standard British English and is perfectly acceptable.
What do you think about these words and their variations? (orient, oriented, orientated, disorient, disoriented, disorientated, etc)
I'd say they left me disoriented but I'm not even sure, maybe I'm disorientated ;__; and I'm too self-conscious to use them now.More importantly, are they completely interchangeable or is there a slight difference in meaning?