From yathar; preeminence, gain -- better, excellency(-leth), profit(-able).
see HEBREW yathar
H3504. yithron
יִתְרוֺן noun [masculine] advantage, profit, only Ecclesiastes; — absolute Ecclesiastes 1:3-4t.; construct 2:13 4t.; — advantage to (ל) any one, לָאָדָם מַהיִֿתְרוֺן 1:3, i.e. what advantage hath a man ? 5:15; 10:11; followed by מִן comparative = advantage beyond, more than 2:13 (twice in verse); construct הָעוֺשֶׂה יִתְרוֺן 3:9 advantage of (for) him that worketh; אֶדֶץ יִתְרוֺן 5:8; דַּעַת יִתְרוֺן 7:12 advantage of knowledge; חָכְמָה הַכְשֵׁיר וְיִתְרוֺן 10:10 an advantage for giving success is wisdom; absolute הַשָּׁ֑מֶשׁ תַּחַת יִתְרוֺן אֵין 2:11.