PIE. *bhew- "to swell; to grow; (to thrive; to dwell; to will, become)"
(*bhew–eh2- *bhew–t- *bhew–t–eh2- *bhew–men- *bhew–lo- *bhew–ro-)
(*bhew- *bhū- *bhō- *bhōw-)
Gk. φύειν "to produce; to grow"
Gk. φύσις "nature; production; birth"
Gk. φυή "growth; nature, talent"
Gk. φυτόν "growth, plant"
Gk. φιτύειν "to bear, generate; to sow, plant"
Gk. φίτυ "seed, sprout"
Lat. *fuere "to be, exist", fuī "have been", futūrus "becoming, imminent, future"
Lat. fierī "to grow; to arise; to become"
Lat. far "grain"
PG. *beuną "to be, exist" → OEn. bēon, En. be
PG. *bū(w)aną "to dwell, live" → ON. bú
PG. *būwą *būwiją "dwelling, nest" → ON. bú bý
PG. *būwijaną "to build; to make dwell" → ON. byggja
PG. *būwô "dweller" → ON. búi
PG. **būþō "room, dwelling" → ON. búð
PG. *būrą "room; house; cage" → ON. búr
PG. *bōwiz **būwiz "yard, court; habitation" → ON. bœr
PG. *bōw(w)ōną "to dwell, live" → OEn. bȳan
PG. *budlą "yard, court; habitation" → OEn. botl, bytle
PG. *baunō *baunǭ "bean" → ON. baun
PG. *buljǭ "nest" → Sv. bylja, bølja
PC. *bwā "to be"
Welsh. bod "to be"
Irish. bí "to be"
OIr. both "cottage"
OIr. bae "benefit"
OIr. būan "steadfast, good"
OIr. buith "to be"
Cymr. bun "queen, wife"
PBS. *būtei "to be"
PS. *byti "to be"
Russian. быть "to be"
Lit. butas "house"
Lit. būti "to be"
Lit. būvis "life, being"
PII. *bhū- *bhavati "to be"
Skr. bhavati "to be" (cf. OEn. bēon, En. be)
Skr. būtam "entity" (cf. PG. *būþō, ON. búð)
Skr. bhū "earth, world"
Skr. bhūman "earth, world, being"
Av. būta- "to be"
Alb. buj "to stay, stay overnight"
Alb. burr "man, husband"
Alb. bane "dwelling, abode" (cf. Skr. bhavanam)
Possibly related to PG. *buskaz "bush, thicket", PC. *buwano- "lasting", *buta- "house", *bunato- "origin", Lat. probus "good", moribundus "dying; fatal".