This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Simple past tense and past participle of vegetate.

"She had even gone so far as to encourage her in the belief that she "vegetated," and the word opened up to her a new world."

vegetated    vegetates    vegetating   

grow    unwind    slow down    relax    loosen up   

sprout    germinate    grow   

immured    hill-country