Superlative form of pleasant: most pleasant. The most pleasant.(adjective)
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Use "pleasantest" in a sentence
"And these three disorders we must endeavour to master by the three great principles of fear and law and right reason; turning them away from that which is called pleasantest to the best, using the Muses and the Gods who preside over contests to extinguish their increase and influx."
"Carver smiled his pleasantest, which is a truly frightful thing."
"The children in the crib, the stockings in which Santa Claus deposits his treasures, recall the pleasantest night of the year."