dwell 
/ˈdwɛl/ verb
dwells; dwelled /ˈdwɛl/ verb /ˈdwɛld, ˈdwɛlt/ or dwelt /ˈdwɛlt/; dwell·ing [no obj] literary + formal : to live in a particular place
▪ a cave where bats dwell ▪ He dwelled [=lived] in the same town for years. ▪ In ancient Greek mythology, Mount Olympus was the dwelling place of the gods. [=the place where the gods lived]
▪ a cave where bats dwell ▪ He dwelled [=lived] in the same town for years. ▪ In ancient Greek mythology, Mount Olympus was the dwelling place of the gods. [=the place where the gods lived]
dwell on/upon [phrasal verb]
dwell on/upon (something) : to think or talk about (something) for a long time
▪ There is no need to dwell on the past. ▪ Don't dwell upon your mistakes.
▪ There is no need to dwell on the past. ▪ Don't dwell upon your mistakes.
