Without a bridle; free from restraint or control, wild or uncontrolled.
From 'bridle' + '-less' (Old English '-lēas', meaning 'without'). The suffix '-less' is one of English's most productive negative formers.
The phrase 'bridleless horse' appears throughout literature as a symbol of freedom and wildness—think of Whitman's poetry celebrating unrestrained nature, where the bridleless horse represents liberty unconstrained by civilization.
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