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over-keen
over-keen adj.
Brit. 
/ˌəʊvəˈkiːn/
, /ˌəʊvəˈkiːn/U.S. /ˌoʊvərˈkin/
/ˌoʊvərˈkin/ΚΠ
1821 W. Scott Kenilworth I. vii. 182 I cannot remember, sir, that its edge was ever over keen.
1898 Argosy Sept. 332 The old hags at the bazaars who are not over keen to penetrate disguises.
1977 J. Bingham Marriage Bureau Murders x. 130 A girl in trouble with an over-keen lover.
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