What letter of the korean alphabet is closest to representing an open mid back rounded vowel? ɔ

Question

What letter of the korean alphabet is closest to representing an open mid back rounded vowel?

The open mid back rounded vowel is written as ɔ in the international phonetic alphabet.

Feel free to edit this post if there is a mistake in the korean words shown in the table below.

Standard English Spelling	Common Misspelling Written by American Children	Standard International Phonetic Notation	Korean
thought THOUGHT	th-aw-t	/θɔt/	생각하다
lawn LAWN	l-aw-n	/lɔn/	잔디
awning AWNING	aw-n-ee-ng	/ɔnɪŋ/	천막 지붕
awful AWFUL	aw-f-uh-l	/ɔːfəl/	추악한
fawn FAWN	f-aw-n	/fɔn/	엷은 황갈색 사슴 어린 사슴

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What letter of the korean alphabet is closest to representing the AW in the English word for fawn and the English word for lawn?

Answer 1

This sound of English words such as THOUGHT is typically approximated as ㅗ, e.g. in 소스 (soseu) ‘sauce’ or ‘source’, 소시지 (sosiji) ‘sausage’, or 옥션 (oksyeon) ‘auction’.

The sign ㅗ is, however, also used to approximate the vowel of English words such as GOAT, e.g. in 소파 (sopa) ‘sofa’ or 도넛 (doneot) ‘donut’ or, sometimes, the vowel of English words such as LOT, e.g. in 옵션 (opsyeon) ‘option’ or 조깅 (joging) ‘jogging’.