1) Affinity of nature 2) Closeness 3) French word used in English 4) Kinship 5) Nearness 6) Nearness in place 7) Nearness in time 8) Nearness of relation 9) Proximity 10) Similarity Found on https://www.crosswordclues.com/clue/propinquity
In social psychology, propinquity iː (from Latin propinquitas, `nearness`) is one of the main factors leading to interpersonal attraction. It refers to the physical or psychological proximity between people. Propinquity can mean physical proximity, a kinship between people, or a similarity in nature between things (`like-attracts-like`). Two ... Found on http://en.wikipedia.org/wiki/Propinquity
Pro·pin'qui·ty noun [ Latin propinquitas , from propinquus near, neighboring, from prope near.] 1. Nearness in place; neighborhood; proximity. 2. Nearness in time. Sir T. Browne. 3. Nearness of blood; kindred; affinity. Shak. Found on http://www.encyclo.co.uk/webster/P/175