Strong’s Greek
G640 — aporia
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀπορία
aporia — pronounced ap-or-ee'-a
from the same as 639; a (state of) quandary:--perplexity. see GREEK for 639
1 occurrence in the KJV.
Luke 21:25
And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring;