A shot in the arm
Meaning
Something that gives a sudden boost of energy, encouragement, or renewed vigor.
Origin
In the early 20th century, as medical science advanced, injections—often of stimulants or vaccines—became a common and effective way to quickly deliver medicine, especially for those feeling run down or needing a quick boost. The act of administering a 'shot in the arm' literally revitalized patients, providing an immediate surge of energy or protective immunity. It wasn't long before this vivid image of direct, swift revitalization escaped the clinic and entered the popular lexicon, perfectly describing any event or action that provided a sudden and much-needed jolt of encouragement or improvement.
Examples
- The new marketing campaign was exactly a shot in the arm for our struggling sales team.
- An unexpected bonus would be a much-needed shot in the arm for my finances this month.