single-word-requests
I'm looking for a word (doesn't matter how obscure) that describes the turbulence / twisting of one substance in another.
The example I'm trying to describe is colored ink being dropped into — and flowing through — water.
I.e. "The ink [XXX] through the water."
Visually:
Source: Shutterstock
As the commenters on the question note, your examples seem just to show people saying harsh things-- perhaps they misspoke, or regretted their words as soon as they spoke them, but language is founded on the assumption that we mean what we say and say what we mean.
There are cases where what one fails to say can cast an otherwise innocuous statement in a negative light. If I ask "did I seem like a stammering cretin in that meeting?" and you reply "I didn't notice you stammering", that implies you did think I was a cretin, even though you didn't say that and may not have meant it. This is usually referred to as "damning with faint praise".
I suggest valley or, more specifically, U-shaped valley which, I presume means open-ended.
http://www.sciencepartners.info/?page_id=1253
ravine a small, deep, narrow valley
cirque A steep-walled hollow in a mountain side, shaped like an amphitheater, or bowl, with one side partially cut away. Place of origin of a mountain glacier.
gully a ravine formed by the action of water.
couloir a steep gorge or gully on the side of a mountain, especially in the Alps.
Update
I have found a diagram that I think covers the subject pretty adequately.
Best Answer
The ink billowed through the water.
The action is like clouds billowing in the air. The OED definition of 'billowing' does not exclude the billowing of one liquid within another.
OED
The billowing of clouds is caused by warm air currents rising upwards. The billowing of the liquid in the image is caused by gravity pulling downwards.