roommateship en · NOUN
Etymology
From roommate + -ship.
Meanings
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(uncountable) The state or relationship of being roommates.
“I am surprised by how well the two other girls were able to meet my outrageous needs,” Ms. Schussel said, “especially by Sam’s ability to keep our friendship out of our roommateship most of the time.”
2009 September 27, Joyce Cohen, “Roommates, Not B.F.F.’s”, in New York Times: