1. Asserting that something is true or correct, as with the answer "yes": an affirmative reply.
2. Giving assent or approval; confirming: an affirmative vote.
3. Positive; optimistic: an affirmative outlook.
4. Logic Of, relating to, or being a proposition in which the predicate affirms something about the subject, such as the statement apples have seeds.
1. A word or statement of agreement or assent, such as the word yes.
2. The side in a debate that upholds the proposition: Her team will speak for the affirmative.
Informal Used in place of the response "yes" to express confirmation or consent.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.