Robert started to reassure her, asserting that he had known a lady who had subsisted upon nougat during the entire—but seeing the color mount into Mrs. Pontellier’s face he checked himself and changed the subject.
There are no more uses of "subsist" in the book.
Show samples from other sources
Many people in the world have to subsist on $1 a day.
Mr. Grote has returned from the woods empty-handed for the past three days, and we’re subsisting on eggs and potatoes.