Hangul Syllable Ddo

It means “again,” “also,” or “another,” depending on context. As an adverb, 또 can repeat an action, add a further item, or point to a future return. “또 만나요” is “see you again”; “또 다른” introduces another or different one.

The word’s recorded history is older than computer encoding. The older spelling ᄯᅩ appears in the 1459 Worinseokbo corpus; that shows an early Hangul form, not a provable first-use date. Hangul was created in 1443 and explained in 1446 because Chinese characters and their Korean adaptations fit Korean poorly.

Its historical connection is Hangul’s older spelling, not a visually similar symbol. Its modern neighbor 다시 overlaps in “see you again,” but 다시 also covers restarting, resuming, or changing a method, while 또 can mean “something more.”

Can 또 sound annoyed?

It can, when repetition is the point. In a repeated-action message, 또 can spotlight that the same problem happened again. Use 다시 when you mean a neutral restart or resumption. The frame 난 또 ... instead records realization after a mistaken expectation, so it can express relief rather than irritation.

The spelling 도 is a separate trap: 도 is a noun-attached “also/too” particle, while 또 stands alone as an adverb and can modify the verb. “저도” means “me too”; “또 먹었어요” says the eating happened again or in addition.