Two full contractions get said as one continuous sound, and native speakers never slow down to separate them for you.

Stacking contractions is normal, fast, native speech. Here's how to actually take one apart.

Most connected-speech lessons cover a single contraction at a time: "gonna," "wanna," one clean reduction with one clear shape. Real speech rarely stops there. When someone talks through a regret or a hypothetical out loud, two or even three modal contractions often pile up in a row, each one already reduced, then reduced again against its neighbor. The result barely resembles the words it's built from, which is exactly why it trips up even confident listeners.

Taking a Stack Apart, in Order

Three moves, done in sequence, every time a stack shows up.

  1. 1

    Expect three words, not one sound

    "Would've should've" isn't a single unfamiliar word, even though it lands on the ear as one. It's two separate contractions, each already a compression of two words, said back to back with no gap between them.

  2. 2

    Find the verb, not the sound

    Every stacked contraction is built around modal verbs (would, should, could, might) plus "have," reduced to "-'ve." Listening for the modal verb underneath the blur gives you an anchor the sound alone doesn't.

  3. 3

    Let the stress guide you to the count

    Native speakers put slightly more weight on the first modal in a stack than the ones after it. That small stress difference is often the only clue that you're hearing two contractions, not one.

TWO CONTRACTIONS, ONE SOUND

By the time "would've should've" leaves someone's mouth, the seam between the two words has already disappeared.

Stacked contractions cluster around a specific kind of sentence: looking back and second-guessing a decision. "I should've could've handled that differently." "You would've should've told me sooner." The grammar is genuinely a little unusual even for native speakers, which is part of why the sound compresses so heavily. Nobody's slowing down to enunciate a sentence they're already embarrassed about.

A quick self-test

Say "I should have could have" out loud at a normal conversational pace, not carefully. Notice how naturally it collapses into something closer to "shoulda coulda" even in your own voice. That collapse is the same one you're trying to reverse-engineer when you hear it from someone else.
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A stacked contraction only sounds like a mystery word the first several times it goes by. Break a handful apart deliberately, on purpose, and the pattern starts announcing itself well before you consciously notice you've learned it.

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