(Dutch, log, heavy, slow, unwieldy.) We have received this word from the Dutch, and apply it generally to men. He's a logy man, i. e. a slow-moving, heavy man. 'He is a logy preacher,' i. e. dull. The Dutch say, Een log verstand, a dull wit.
·adj Heavy or dull in respect to motion or thought; as, a logy horse. ...
Webster's Dictionary of the English Language
·- A combining form denoting a discourse, treatise, doctrine, theory, science; as, theology, geology...