Proto-Indo-European root meaning "dust, vapor, smoke." 

It forms all or part of: enthymeme; fewmet; fume; fumigation; funk; perfume; sfumato; typhoid; typhoon; typhus.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit dhuma- "smoke, fume;" Greek thymos "spirit, courage, anger," thymiao "fumigate," thymin "incense;" Latin fumus "smoke, steam, fume;" Lithuanian dūmai "smoke" (plural); Old Prussian dumis "smoke;" Old Church Slavonic dymu "smoke;" Middle Irish dumacha "fog;" perhaps Old High German toum "steam, vapor."

past tense of go; originally a past tense and past participle of wend (v.), as sent from send.

The past tense forms of wend were wende, wended, but variants wente, went developed from c. 1200 as part of a Middle English pattern in which the -d of the past tense past participle becomes -t after -t-, -p-, -s-, -f-, in some cases -l- and -n- (also compare keep/kept, leave/left, gird/girt, build/built, feel/felt, dwell/dwelt, Middle English kissen/kiste, etc.

Went began to replace older past tenses of go in Middle English. By c. 1500 they were fully employed in that function, and wend retained the past tense form wended. 

"an inhabitant, a resident of some place," late 14c., agent noun from dwell (v.).

"place of residence, habitation, abode," mid-14c., verbal noun from dwell (v.). Earlier it meant "a stupor" (early 14c.); "delay, procrastination; a staying in a place" (c. 1300).

"act of residing," late 14c. (Wyclif's translation of Latin inhabitatio), present participle of obsolete indwell, from in (adv.) + dwell (v.). He also used indweller for Latin inhabitans and indwell (v.) for inhabitare.