| acidify | (verb) turn acidic | Synonyms: acetify |
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| (verb) make sour or more sour | Synonyms: acetify, acidulate, sour |
| codify | (verb) organize into a code or system, such as a body of law | - |
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| dandify | (verb) dress like a dandy | - |
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| dehumidify | (verb) make less humid | - |
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| edify | (verb) make understand | Synonyms: enlighten |
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| humidify | (verb) make (more) humid | Synonyms: moisturise, moisturize |
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| lapidify | (verb) change into stone | Synonyms: petrify |
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| modify | (verb) make less severe or harsh or extreme | - |
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| (verb) add a modifier to a constituent | Synonyms: qualify |
| (verb) cause to change; make different; cause a transformation | Synonyms: alter, change |
| rigidify | (verb) become rigid | - |
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| (verb) make rigid and set into a conventional pattern | Synonyms: ossify, petrify |
| solidify | (verb) become solid | - |
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| (verb) make solid or more solid; cause to solidify | - |