Concerning

[Sarah]

Pertaining to; regarding; having relation to; respecting; asregards.I have accepted thee concerning this thing. Gen. xix. 21.The Lord hath spoken good concerning Israel. Num. x. 29.

[Ernesto]

On the subject of or in connection with; about.

[Raeanne Dimick]

[Traditional] definition: involving or [referencing] something or someone.

Current definition: to be a cause for [concern].

[Magaret]

Concerning- used as an adjective as opposed to a verb or a phrase as in of [concern]. (Used by [new age] morons that have no real applied usage if sentence [construction].)