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3. be as keen as mustard

be as keen as mustard

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be as keen as mustard

To be very enthusiastic about something. Primarily heard in UK, Australia. These new kids are as keen as mustard to be in the choir, so we can definitely get them to clean up the choir room for us.

See also: keen, mustard

be as keen as mustard

  (British & Australian old-fashioned)

to be very eager Why don't we ask Tom to captain the cricket team? He's as keen as mustard.

See also: keen, mustard