head·long 
/ˈhɛdˈlɑ:ŋ/ adverb
/ˈhɛdˈlɑ:ŋ/ adverb 1 : with the head leading : headfirst
▪ I dove headlong to the floor. 2 : without taking time to think about your actions — usually + into ▪ We rushed headlong into marriage.
▪ I dove headlong to the floor.
— head·long /ˈhɛdˌlɑ:ŋ/ adjective always used before a noun
▪ a headlong dive ▪ We made a headlong rush for the door.
/ˈhɛdˌlɑ:ŋ/ adjective always used before a noun ▪ a headlong dive ▪ We made a headlong rush for the door.
