Erymenn

(art, technique)
I like learning so I like the meaning. Also the visual memo my brain came up with makes me smile every time. I link 術 with the cliché 忍術 (ninjutsu), so I have this image of people (亻) going (行) from tree to tree (木) with some grappling hook (丁), and they are so fast the three kanji components get an additional stroke on top as a speed effect.