no-holds-barred

The phrase originates from the sport of wrestling, specifically the catch-as-catch-can style where most holds are permitted. The literal expression "no holds barred" described a match with virtually no prohibited grips or restraining techniques. This vivid imagery of an unrestricted physical contest was metaphorically extended by the mid-20th century to describe any activity, debate, or competition conducted without rules or limits. The logic of its evolution is direct: the absence of physical restraints in sport became synonymous with the absence of figurative restraints in conduct, emphasizing a ruthless, uninhibited, or fiercely competitive approach.

Structure: no + holds + barred - no (sense: not any): From Old English 'nā', a compound of 'ne' (not) and 'ā' (ever). Functions as a determiner/adverb of negation. - holds (sense: grips, restraining moves): From Old English 'healdan' (to grasp, keep). Functions as a noun, plural form. - barred (sense: prevented, obstructed): From Old French 'barre' (bar, rod). Functions as a past participle adjective.