Wednesday, January 13, 2010


indefeasible • \in-dih-FEE-zuh-bul\ • adjective : not capable of being annulled or voided or undone

Example Sentence:
After his father's untimely demise, which reeked of foul play, Prince Nikolai took to the throne as was his indefeasible right as the king's eldest son.

We acquired "indefeasible" in the mid-16th century by combining the English prefix "in-" ("not") with "defeasible," a word borrowed a century earlier from Anglo-French. "Defeasible" itself can be traced to an Old French verb meaning "to undo" or "to destroy." It's no surprise, then, that something indefeasible is essentially "un-undoable" or "indestructible." Another member of this family of words is "feasible," meaning "capable of being done or carried out." Ultimately, all three -- "indefeasible," "defeasible," and "feasible" -- can be traced back to the Latin verb "facere," meaning "to do."

I went to my professor and begged him to change my grade. I mean, I had a good excuse! He politely informed me that my grade had already been submitted and was therefore indefeasible. Bugger.

Your turn! Use indefeasible in a sentence in the comment section!


Kate T said...

In the Princess Bride, Vizzini found many things inconceivable but in the end it was his death that was not only conceivable but indefeasible.

vanessa said...

Sorry, I don't have a good sentence right now, but I just wanted to say that I LOVE this post idea! Thanks for the mini-vocab lesson!

Emily said...

I fully admit, the first thing I thought of when I read this post was "would you stop saying that, I don't think that means what you think it means!" I guess Kate T and I are sharing the brain. This is a good word to know!