Is unshakeable a real word?

Yes. Unshakeable is a standard English word, listed in major dictionaries with the same meaning as unshakable: unable to be shaken or disturbed. It's more common in British English, while American English favors the shorter unshakable spelling.

Which spelling do American dictionaries prefer?

Merriam-Webster and most American style guides list unshakable as the primary form, following the same silent-e-drop pattern used in unmistakable and debatable. Unshakeable isn't wrong in American writing, just less common there.

Should I use unshakable or unshakeable in a resume or business writing?

Use unshakable if your audience is mainly American, unshakeable if it's mainly British or Commonwealth. Whichever you pick, use it the same way every time the word appears in the document.

What does "unshakeable confidence" actually mean?

It means confidence that survives setbacks — criticism, mistakes, rejection — without collapsing into lasting self-doubt. It's built through repeated evidence of handling hard situations, not through never feeling nervous or unsure.

Unshakeable vs. Unshakable: Which Spelling Is Correct?

Both unshakable and unshakeable are correct, and they mean the same thing: unable to be shaken or disturbed. Unshakeable is the older, e-retaining form favored by British dictionaries; unshakable drops the silent e, matching American usage and words like unmistakable. Pick one spelling and use it consistently.

Is Unshakable or Unshakeable More Correct?

Neither spelling is wrong. Both unshakable and unshakeable appear in major dictionaries with identical definitions: firm, steady, and not able to be shaken in position or conviction. The difference is regional habit and spelling convention, not correctness. Use either one in a sentence and no careful reader should flag it as a mistake. What matters more than which form you pick is that you pick one and stay consistent with it.

Where Did the Two Spellings Come From?

English has a general rule for adding -able to a verb that ends in a silent e: drop the e. Debate becomes debatable. Desire becomes desirable. Mistake becomes unmistakable, not unmistakeable. Shake follows the same pattern, which is why unshakable is the more regular spelling by that rule.

Unshakeable keeps the e. That isn't an error — English has plenty of exceptions, and likeable, sizeable, and unshakeable are common ones, especially in British English. British dictionaries such as Collins and the Oxford English Dictionary often list unshakeable first or treat it as equally standard, while American dictionaries like Merriam-Webster favor unshakable.

Does the Spelling Change the Pronunciation or Meaning?

No. Unshakable and unshakeable are pronounced the same way, and they carry the exact same meaning in every dictionary that lists both. There's no formal register where one is considered more correct, more formal, or more casual than the other. The choice comes down to house style and audience, not linguistic accuracy.

Which Spelling Should You Use?

If you're writing for a general audience, pick one spelling and use it consistently throughout a document, a website, or a brand. Mixing both forms in the same piece reads like a typo even when it technically isn't one. Search engines and readers won't penalize either spelling, but consistency helps you look intentional rather than careless.

A simple rule of thumb: if most of your audience is in the United States, use unshakable. If you're writing mainly for a UK, Irish, Australian, or other Commonwealth audience, unshakeable will feel more natural. This site uses unshakeable as the primary spelling — it matches our name and our domain — and you'll see it used consistently throughout our guide to how to build unshakeable confidence.

What Does Unshakeable Confidence Mean?

As a phrase, unshakeable confidence doesn't mean confidence that never wavers — nobody has that. It means confidence that holds up under pressure: criticism, failure, rejection, or a bad day don't take it out permanently. You can feel nervous, get something wrong, or take a hit and still find your footing again without spiraling into self-doubt.

That's different from arrogance, which is often a cover for feeling unsure. Unshakeable confidence is closer to what psychologist Albert Bandura called self-efficacy: a stable belief in your ability to handle what comes, built from actual evidence of handling things before. For a practical breakdown of how to build it, see our guide on how to build unshakeable confidence.

Are There Other Word Pairs Like This?

Yes. English has a small family of -able / -eable pairs where both spellings are accepted:

likable / likeable
sizable / sizeable
movable / moveable
salable / saleable
unmistakable / unmistakeable, though unmistakable is far more common in both dialects

In each pair, the shorter form without the e tends to be more common in American English, while the version with the e is more common in British English. Unshakable and unshakeable follow the same split.

Bottom Line

There's no wrong answer between unshakable and unshakeable, only a more consistent one. Pick the spelling that matches your audience, then use it everywhere — headlines, body copy, and metadata alike.