Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praeterpropter, prep. with acc. [praeter-propter], thereabout, more or less (ante-class.), Enn., Cato, and Varr. ap. Gell. 19, 10, 10 (see the whole passage respecting the phrase, and Hand, Turs. 4, 544 sq.).