Synonyms for Chaise longue:

n.

back, chesterfield, armrest, chaise lounge, armchair, chair, backrest, arm. brolly, bench, lounger, deck chair, parasol, beach chair, lawn chair. chaise longue (noun)
chaise, daybed.
couch (noun)
daybed, chair, chesterfield.

Other synonyms:

backrest, lounger, brolly, parasol, lawn chair, armrest, chesterfield, armchair, chaise lounge, deck chair, beach chair. chair. bench. arm. back.