by a side wind

adverb

Roget 526: by a side wind; sub silentio [Lat.]; in the background; behind the scenes, behind one's back; on the tip of one's tongue; secretly etc. 528; between the lines.   

Roget 629: by a side wind, by an indirect course; in a roundabout way; from pillar to post.   

Roget 702: cunningly etc. adj.; slyly, slily^†, on the sly, by a side wind.   

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