all-out
UK: ˌɔːl ˈaʊt | US: ˌɔːl ˈaʊt
adj. complete; using all available resources or effort
adj. unrestrained; without limits
The term "all-out" emerged in the early 20th century, combining "all" (Old English eall, meaning "entire") and "out" (Old English ūt, implying "to the fullest extent"). Originally used in sports and warfare, it metaphorically extended to describe exhaustive efforts or unreserved actions. The morphemes retain their literal meanings but together emphasize totality or maximum intensity.
The team went all-out to win the championship.
She made an all-out effort to finish the project on time.
The company launched an all-out marketing campaign.
The protest turned into an all-out confrontation with police.
He avoided all-out conflict by negotiating carefully.