Strong's Concordance

Original word: γέλως
Transliteration: gelós
Definition (short): laughter
Definition (full): laughter

NAS Exhaustive Concordance

Word Origin: from gelaó
Definition: laughter
NASB Translation: laughter (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From gelao; laughter (as a mark of gratification) -- laughter.

see GREEK gelao

KJV: Be afflicted, and mourn, and weep: let your laughter be turned to mourning, and your joy to heaviness.
NASB: Be miserable and mourn and weep; let your laughter be turned into mourning and your joy to gloom.