大だい原げん則そくだいげんそくMeanings1nounoverriding principle; fundamental ruleRefers to a core, non-negotiable principle that takes precedence over other considerations. Often used in formal or explanatory contexts.安あん全ぜん第だい一いちは工こう事じ現げん場ばの大だい原げん則そくだ。Safety first is the overriding principle at construction sites.