"letdown" meaning in English

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      "expansion": "[Appendix:Glossary#deverbal|Deverbal]] from\", \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"English\", \"term\" : \"let down\", \"status\" : \"missing\", \"lang\" : \"en\" } ], \"keyword\" : \"deverbal\" } ], \"lang_name\" : \"English\", \"term\" : \"letdown\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"letdown\">\nDeverbal from let down.",
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  "etymology_text": "Deverbal from let down.",
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  "lang_code": "en",
  "pos": "noun",
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          "word": "let-down"
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  "etymology_text": "Deverbal from let down.",
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