This is clearly subjective, but some words really sound like the thing they describe (personal favorites: puffin; bulbous; fidgeting). Do you have an example of such a word (or, alternatively, of a word that sounds like the exact opposite of what it refers to)? What do you think creates this effect?
Pop! Ballons, popcorn, soda pop full of bubbles that fizz and burst in your nose and throat.
Sussuruss: whisper, murmur, rustle. The silk folds of a full-skirted dress swooshing against each other as a lovely lady walks across the room.
Slice: the satisfying sound of a properly sharpened chef’s knife easing through an onion or a potato.
Cackle: An old lady laughing from the belly; the cacophony of the chicken yard; the gabble of geese.
Flip-flop: What I’m wearing slaps against my feet with every step, announcing my arrival.
Meow: You can hardly say it without doing it.
Twitter: The melodic birdsong right outside my study window, announcing the glories of an early- August summer morning blessed with cerulean sky and puffy marshmallow clouds scudding from west to east.
I love words. Language is an amazing thing.