1. Being as much as is needed; adequate; enough.
2. Archaic Competent; qualified.
[Middle English, from Old French, from Latin sufficiēns, sufficient-, present participle of sufficere, to suffice; see SUFFICE.]
Synonyms: sufficient, acceptable, adequate, enough, satisfactory
These adjectives mean being what is needed without being in excess: has sufficient income to retire comfortably; made acceptable grades; put in an adequate supply of wood; drew enough water to fill the tub; offered a satisfactory sum for the property.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.