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

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v. To make or become more lively: liven up a party; a discussion that livened up.

v. To cause to be more lively.

v. to make lively; -- sometimes used with up.

To put life into; enliven; make more brisk; rouse: generally with up: as, to liven up a fire, or a despondent person.

To become lively or more lively; generally with up: as, he livened up a bit after dinner.

v. make lively

"I have a few ideas of how to again liven up the place."

livened    livening    livens   

energise    brace    arouse    perk up    stimulate    energize   

feed    dwell    float   

juice up    spirit up    pep up    ginger up    jazz up    inspirit    spirit   

enliven    liven up    make lively    invigorate    animate    living    energetic    burning    electrified    loaded   

Ivan    enliven    iven