platonic relationship
Platonic relationship (noun) means a close, affectionate relationship between two people that involves no sex or romance. Example: “They have shared a flat for six years in a purely platonic relationship.”
How to use platonic relationship
Learner’s notesIn plain EnglishA very close friendship with no sex or romance in it.
Neutral. Capitalise 'Platonic' only when referring to the philosophy of Plato.
Fill the gap
Can you complete this real example?
They have shared a flat for six years in a purely _____.
Etymology
From the name of the Greek philosopher Plato, whose Symposium describes a love that rises above physical desire towards the ideal; the modern narrower sense of 'friendship without sex' developed later.