- 1847, William Makepeace Thackeray, Vanity Fair:
- The Captain thought so, and raved about her in uncouth convulsions. The barbed shaft of love had penetrated his dull hide. Six weeks—appropinquity—opportunity—had victimised him completely.
- 1911, Henry C. Hansbrough, The Second Amendment, page 111:
- Some marvelous psychological results have been noted in consequence of the appropinquity, for a period of several hours, of two healthy bodies such as Eva's and Andy's.
ad- + propinquity