We have put together a list of words that are similar to GAINSAYING.

5 Alternative Words Similar to gainsaying

1 Challenge Verb      Synonym Words Like Challenge
2 Dispute Verb      Synonym Words Like Dispute
3 Contend Verb      Synonym Words Like Contend
4 Contest Verb      Synonym Words Like Contest
5 Repugn Verb      Synonym Words Like Repugn

8 definitions of gainsaying

1 Opposition, especially in speech; refusal to accept or believe something; contradiction; denial.
2 Rebellious opposition; rebellion Core.
3 Opposition, especially in speech.
4 Refusal to accept or believe something.
5 Contradiction.
6 Denial; denying.
7 Rebellious opposition; rebellion.
8 Present participle of gainsay.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide