pickletdown letdown {n.} A disappointment; a heartbreak. It was a major letdown for John when Mary refused to marry him. Categories: add yours disappointment noun Source: A Dictionary of American Idioms 'letdown' on video Letdown. - Love Is A Weapon (Official Music Video) Letdown. - Pain (Official Music Video) nothing, nowhere. - letdown Letdown - Temporary (Official Video) sort: relevance, mode: exact match, q: "letdown", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss