1
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Phrase(s): pop up
1. [for a baseball batter] to hit a baseball that goes high upward rather than outward. • The catcher came to bat and popped up. • I hope I don’t pop up this time. 2. [for a baseball] to fly high upward rather than outward. • The ball popped up and went foul. • The ball will always pop up if you hit it in a certain way. 3. to arise suddenly; to appear without warning. • New problems keep popping up all the time. • Billy popped up out of nowhere and scared his mother., Phrase(s): pop something up
to remove something by making it jump or burst upwards. • Henry popped the lid up and helped himself to the strawberry preserves. • He popped up the lid and cleaned out the jam jar., Phrase(s): pop up (some place)
to appear suddenly and unexpectedly some place. • I never know where Henry is going to pop up next. • A new problem has popped up.
McGrawhill's American Idioms And Phrasal Verbs
2
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Suddenly appear, as in After a brief warm spell all the flowers popped up, or He's constantly popping up where he's least expected.
American Heritage Idioms