to stay behind or in the same place: to remain at home, only Tom remained - (copula)
to continue to be: to remain cheerful  to be left, as after use, consumption, the passage of time, etc to be left to be done, said, etc: it remains to be pointed out 
WordReference Random House Learner's Dictionary of American English © 2025
re•main /rɪˈmeɪn/USA pronunciation  
v. 
n. remains, [plural]
WordReference Random House Unabridged Dictionary of American English © 2025- to continue to be as specified: [~ + adjective][not: be + ~-ing]He remained loyal to his friends.[~ + object]He remained a bachelor for many years.
 - to stay behind or in the same place:[no object]He remained at home while the others left.
 - to be left after the removal, loss, or destruction of all else:[no object]Few buildings remain in that neighborhood.
 - to be left to be done, told, shown, etc.: [no object][no object]Two questions remain.[~ + to + verb]A few things remain to be done.
 
n. remains, [plural]
- something that remains or is left.
 - 
- traces of some quality, condition, etc.
 - a dead body;
corpse. - parts or substances remaining from animal or plant life:fossil remains.
 
 
re•main 
(ri mān′),USA pronunciation v.i. 
n.
 
- to continue in the same state;
continue to be as specified:to remain at peace. - to stay behind or in the same place:to remain at home; I'll remain here when you go to the airport.
 - to be left after the removal, loss, destruction, etc., of all else:The front wall is all that remains of the fort.
 - to be left to be done, told, shown, etc.:Only the dishwashing remains.
 - to be reserved or in store.
 
n.
- Usually, remains. something that remains or is left.
 - remains: 
- Literaturemiscellaneous, fragmentary, or other writings still unpublished at the time of an author's death.
 - traces of some quality, condition, etc.
 - a dead body;
corpse. - parts or substances remaining from animal or plant life that occur in the earth's crust or strata:fossil remains; organic remains.
 
 
- Latin remanēre, equivalent. to re- re- + manēre to stay; see manor
 - Anglo-French remain-, stressed stem of Middle French remanoir
 - late Middle English remainen 1375–1425
 
- 1.See corresponding entry in Unabridged abide, stay. See continue.
 - 2.See corresponding entry in Unabridged wait, tarry, rest.
 - 3.See corresponding entry in Unabridged endure, abide.
 
- 2.See corresponding entry in Unabridged depart.
 
Collins Concise English Dictionary © HarperCollins Publishers::
'remain' also found in these entries (note: many are not synonyms or translations):
British West Indies
 - Cincinnati
 - Comoros
 - Ferris wheel
 - Flensburg
 - Hadrian's Wall
 - Lagrangian point
 - PEP
 - abide
 - abort
 - acquiesce
 - ageratum
 - albatross
 - allow
 - angle of repose
 - anonymous
 - answer
 - answer back
 - antithesis
 - apply
 - articulator
 - axolotl
 - baby split
 - balled-and-burlapped
 - be
 - bear
 - bed
 - bedpost
 - beg
 - berth
 - bide
 - breast
 - cabbage
 - carry
 - casing nail
 - change
 - cleave
 - cling
 - closet
 - cocoon
 - colloid
 - commorancy
 - community home
 - conspiracy of silence
 - constancy
 - continue
 - cool
 - curlpaper
 - cutting
 - dateless