bog (v.) Look up bog at
"to sink (something or someone) in a bog," c. 1600, from bog (n.). Intransitive use "to sink or stick in a bog" is from c. 1800; with down (adv.) by 1848, American English. Related: Bogged; bogging.
bog (n.) Look up bog at
"wet, soft, spongy ground with soil chiefly composed of decaying vegetable matter," c. 1500, from Gaelic and Irish bogach "bog," from adjective bog "soft, moist," from Proto-Celtic *buggo- "flexible," from PIE root *bheugh- "to bend." Bog-trotter applied to the wild Irish from 1670s.