happen upon

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Related to happen upon: swayed
See: discover, find
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References in periodicals archive ?
For one thing, ants don't just happen upon the fungus they tend.
DON'T forget to tune in to tomorrow night's edition of Rosemary And Thyme on ITV1, so that you can find out what Felicity Kendal and Pam Ferris (AKA Rosemary and Thyme) are getting up to as they go about their gardening business but also happen upon a murder mystery or two.
Geologists normally happen upon landslide scenes long after the action has ended.
Leprechauns have been known to take deadly revenge on those who happen upon them.
If biologists were to happen upon a new animal species with teeth and claws, they would take precautions even though the animal might turn out to be a pussycat.