bestest in English dictionary bestest Meanings and definitions of "bestest" (informal, nonstandard, humorous or childish) best adjective (nonstandard, informal, humorous or childish) best; very best; superlative form of [i]best[/i]: most best verb ( archaic) second-person singular simple present form of [i]best[/i] more Sample sentences with "bestest" Declension Stem Try again Available translations Cornish Hungarian Authors