Definition of mostest
nonstandard, often humorous
—used in place of most (as in imitation of childlike speech)
- … Americans are such suckers for TV commercials that we are powerless to resist the product that hits us with the mostest.
- —Russell Baker
- The disposition of personal property often becomes a scavenger hunt. Items are tagged while last breaths are being gasped. To the crudest goes the mostest.
- —Thomas Easton
- Lady Pamela Berry, wife of a newspaper proprietor and in her day the London hostess with the mostest, had given a dinner party in May 1951 that deserves both literary and historical footnotes.
- —Geoffrey Wheatcroft
