1748 S. Richardson VI. cxvi. 369 She has too often forfeited that peace of mind, which she so much prefers, by her over-concern to preserve it.
1865 M. Arnold Pref. p. xvii I thought this over-concern a little unworthy.
1988 M. Bachelor (BNC) 132 It is..important to get the right balance between over concern and lack of care.