the.com/going

means Moving toward somewhere else, or in the process of being used up or departing — the action verb for not-staying-put.

from From Old English 'gan,' meaning simply to go or move — one of the oldest, most stubbornly irregular verbs in the language. It's so basic that English never bothered giving it a tidy past tense of its own; instead 'went' was borrowed from 'wend' (as in 'wend one's way'), leaving 'go' to limp along on two unrelated verbs stitched together. The '-ing' just marks it mid-motion, forever caught in the act.