Submitted by György Chityil ... on Fri, 01/19/2018 - 21:46 Hierarchy: PhraseDescription: {{rfc-def}} {{context|as imperative|with ''to''}} To acknowledge the contribution of; to congratulate.Ngram: hats offNgram Text: hats offSource: WiktionaryIssue: 0Wiktionary tag: rfc-defas imperativewith ''to''Ngram Count: 2