zeal /ziːl/ BrE AmE noun [uncountable]
[ Date: 1300-1400 ; Language: Late Latin ; Origin: zelus , from Greek zelos ]
eagerness to do something, especially to achieve a particular religious or political aim
religious/revolutionary/missionary etc zeal
He approached the job with missionary zeal.
in your zeal to do something
In their zeal to catch drug dealers, police have ignored citizens’ basic civil rights.
zeal for
their zeal for privatization