Vaulters are words of three or more syllables. You divide them to say, and you leap, like
psycho ||ling || uist || ics
If you don’t make it and you stumble, you act as if you’ve just stepped into a cloud of bubbles. Alice is perfect at acting like in bubbles, though she never stumbles.
Or, it never shows. She says you first think about a long word, like you could see it written and hear it spoken, and only then you say it.
We tell vaulters not only by the syllables. Vaulters are words made of other words. Psycholinguistics is made of “psychology” and “linguistics”.
Sometimes, words are mergers. We obviously could divide the verb “to condescend” into syllables, and there would be enough for a vaulter, but we do not take the meaning for a sum, as con+descend.
Even if you got two people go down the stairs at the same time, says John, you’d have the verb for a merger. It is the same with “understanding” and many other words.
We choose each own color and make vaulter or merger crosswords, well, much like ordinary crosswords, have a look.
Here are a few links to dictionaries. Vaulters are easy to find, if you turn on suggestions for the search field.
Merriam-Webster for mobile, with word suggestions
American Heritage dictionary