Adjective
1. having a sharp taste
Lemons are sour.
Test
1 / 5
Don't abuse that man, he can't help walking slowly.
2 / 5
an abrupt death
3 / 5
He is ( ) to speak English.
4 / 5
Los Angeles is abbreviated (to) L.A.
5 / 5
a frame with rows of sliding beads, used for doing arithmetic
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