Verb (used with object) : The wit of Mencken enlivened his age. ,Flowers enliven any room.    From Dictionary.com. 

His pale blue eyes were fixed in his head, and he chewed steadily at lozenges of peppermint or cinnamon to hide the perfume of the glass of "enlivener" with which his wife had bribed him as an argument for submitting to get up and be dressed.    From Wordnik.com.  [The Dew of Their Youth] Reference

Different parties of pleasure were talked of: but still the enlivener of every party was not to be in any one of them.    From Wordnik.com.  [The History of Sir Charles Grandison, Volume 4 (of 7)] Reference

It did him no great harm; it might be taken for an enlivener; he was dead on his favourite spot the ensuing round, played postman on it.    From Wordnik.com.  [The Amazing Marriage — Complete] Reference

Whiskey, to the early Americans, was "an informal currency, a means of livelihood, and an enlivener of a harsh existence," so they strongly resisted the tax.    From Wordnik.com.  [NPR Topics: News] Reference

Savitri the Sun as quickener or enlivener, Mitra the bright Sun of the morn; Pushan the Sun of the shepherds; Varuna was the sky as all-embracing; Aditya the sky as boundless.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery] Reference

There is no enlivener of the imagination, no enabler of the judgment, no strengthener of the intellect, to compare with the belief in a live Ideal, at the heart of all personality, as of every law.    From Wordnik.com.  [A Dish of Orts : Chiefly Papers on the Imagination, and on Shakespeare] Reference

Joe Manton just then brought in a bouquet for Miss Evelyn, a very common enlivener of the breakfast-table, all the more when, as in the present case, the sisters could not divine where it came from.    From Wordnik.com.  [Queechy] Reference

He has proposed a broader range of responsibilities and possibilities for the individual who leads congregational singing, and suggests that in culturally conscious worship the musical presider be called the "enlivener.".    From Wordnik.com.  [RELIGION] Reference

Thus I think I have proved to you that the writer of a good novel has at least a claim to the good will of society, as the contriver of an agreeable amusement, and the enlivener of a vacant hour: for you will allow, that whatever contributes to the sum of human enjoyments, without being too chargeable to human prudence, is so much gained.    From Wordnik.com.  [The Unexpected Legacy] Reference

A rejoicer of the heart, an enlivener of conversation, a sovereign restorative after the fatigues of study, of labour or of love; its peculiar characteristic is, to comfort the stomach, nourish the nerves, and to protect the frame against the debilitating effects of a hot climate and a fiery atmosphere.    From Wordnik.com.  [The Mirror of Taste, and Dramatic Censor, Vol. I, No. 4, April 1810] Reference

But fire, the enlivener of the general frame.    From Wordnik.com.  [The Poetical Works of John Dryden, Volume 2 With Life, Critical Dissertation, and Explanatory Notes] Reference

Dear Tea, that enlivener of wit and of soul.    From Wordnik.com.  [Sporting Magazine] Reference