Approximately legitimate (with either positive or negative connotation); marginally acceptable but shady; dubious but still acceptable. (Often accompanied by a "so-so" hand gesture, like a one-handed "jazz hands" with the palm downward.)
1. The numbers on this sales sheet may be sketchy, but the report's still totally legitimish. 2. "And did you *read* that report?" "Yeah (*snicker*) -- it was, um, legitimish."