adj. pleas·ant·er, pleas·ant·est
1. Giving or affording pleasure or enjoyment; agreeable: a pleasant scene; pleasant sensations.
2. Pleasing in manner, behavior, or appearance.
3. Fair and comfortable: pleasant weather.
4. Merry; lively.
[Middle English plesaunt, from Old French plaisant, present participle of plaisir, to please, from Latin placēre; see plāk-1 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.