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1.
In motion, usually slowly, so as to appear still. The opposite of stationary.
A motionary object tends to stay in motion, unless acted upon by a large boot.
by Boomsmack July 30, 2013
 
2.
Objects that are always in motion. Object that are not in motion are stationary. Objects that are always in motion are motionary.
The exaust fan in the men's washroom is always on, in fact, its motionary.
by man from krog June 07, 2009