unsteadfast

adjective

un·​steadfast

¦ən+

1

: not steadfast in thought or action : vacillating

an unsteadfast backslider

a man of unsteadfast heart

2

: unstable sense a(1)

the unsteadfast waters of the ocean

unsteadfastness

"+

noun

Word History

Etymology

Middle English unstedefast, from un- entry 1 + stedefast steadfast

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!