• WordNet 3.6
    • n cheerer a spectator who shouts encouragement
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Webster's Revised Unabridged Dictionary
    • n Cheerer chēr"ẽr One who cheers; one who, or that which, gladdens. "Thou cheerer of our days.""Prime cheerer , light."
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Century Dictionary and Cyclopedia
    • n cheerer One who gives cheer or utters cheers; one who or that which gladdens.
    • n cheerer A glass of spirit and warm water.
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In literature:

Sweet cheerer of sadness!
"Pipe and Pouch" by Various
So intent was he on the contents of his book that he did not notice the approach of the cheerer of his solitude.
"Eventide" by Effie Afton
You're the best little cheerer-up I know when I feel blue.
"The Camp Fire Girls on the March" by Jane L. Stewart
You're the best little cheerer-up I know when I feel blue.
"A Campfire Girl's Test of Friendship" by Jane L. Stewart
Let's go to Assembly Hall and be giddy little cheerers up.
"Polly's Senior Year at Boarding School" by Dorothy Whitehill
To appear as Mary's cheerer-up now was, indeed, considerably beyond him.
"Angela's Business" by Henry Sydnor Harrison
Bands and cheerers set in again on one beat.
"Our Army at the Front" by Heywood Broun

In poetry:

We'll never part, but oh, thou friend
And cheerer of life's dreary way.
May reason guide us to the end,
And may she ever with thee stay.
"Love" by Thomas Frederick Young