(as) happy as a clam

idiom

Definition of (as) happy as a clam

US, informal
: very happy She spent the afternoon reading and was (as) happy as a clam.

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“(as) happy as a clam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/%28as%29%20happy%20as%20a%20clam. Accessed 22 Oct. 2020.

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