upon
/əˈpɑn/ preposition A2- alternative to on in most, though not all, prepositional uses.
From the library
When Dorothy, who was an orphan, first came to her, Aunt Em had been so startled by the child’s laughter that she would scream and press her hand upon her heart whenever Dorothy’s merry voice reached her ears; and she still looked at the little girl with wonder that she could find anything to laugh at.
Uncle Henry sat upon the doorstep and looked anxiously at the sky, which was even grayer than usual.
Danglars and Caderousse set off upon their errand at full speed; but ere they had gone many steps they perceived a group advancing towards them, composed of the betrothed pair, a party of young girls in attendance on the bride, by whose side walked Dantès’ father; the whole brought up by Fernand, whose lips wore their usual sinister smile.
Upon this, the old man, vexed and ashamed, made the best of his way home again, convinced that by endeavoring to please everybody he had pleased nobody, and lost his Ass in the bargain.
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