Someone who bridles horses, restrains animals, or metaphorically restrains or controls something.
From 'bridle' + '-er' (Old English '-ere'). The '-er' suffix creates an agent noun indicating someone who performs an action.
The word 'bridler' appears in Shakespeare and older texts as both a literal role (someone who fits bridles) and a metaphorical one (someone who restrains behavior), showing how occupational terms become moral vocabulary.
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