It would seem an over-doing, as it were, of my own importance.
"Over-doing in work is not likely to lead to under-doing a breakdown," Miss Bradbury replied to Mrs. Scollard's remark.
Truly Greek is the thought, for the Greek maxim above all others was moderation, no over-doing.
If you are a comic actor, don't run away with the piece by over-doing your fun.
Further, the over-doing ...