looker-on

plural lookers-on · alternative on-looker

1. A spectator, onlooker.

   1 more example

   After dancing with each other at a proper number of balls, the young people justified these opinions, and an engagement, with a due reference to the absent Sir Thomas, was entered into, much to the satisfaction of their respective families, and of the general lookers-on of the neighbourhood, who had, for many weeks past, felt the expediency of Mr. Rushworth’s marrying Miss Bertram.

   1814 May 9, [Jane Austen], chapter IV, in Mansfield Park: […], volume I, London: […] [George Sidney] for T[homas] Egerton, […], →OCLC, page 78