as happy as a clam
Meaning
Extremely happy and content; very pleased with the situation.
Origin
From the longer 19th‑century American phrase “happy as a clam at high water,” when clams are safer from being dug up; the shortened form “happy as a clam” became common later.
Notes
A friendly, informal simile meaning very content. Often used with be/look/seem; it sounds lighthearted rather than serious or formal.
Examples
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Ever since she started her new job, she’s been as happy as a clam.
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The kids were as happy as a clam playing in the snow all afternoon.
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After we finally fixed the leaking roof, my dad was as happy as a clam.
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He was as happy as a clam with a hot cup of coffee and a good book.
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When I told her the good news, she looked as happy as a clam.
Grammar & Usage Notes
Fixed as a simile: typically “be/look/seem as happy as a clam.” Can take tense changes (was/will be) but the core phrase stays the same. Often used without “at high water” today.
Synonyms
- delighted
- over the moon
- on cloud nine
- as happy as a lark
Antonyms
- miserable
- unhappy
- down in the dumps