Hangul syllable ggyaj

It is one Korean Hangul syllable. Hangul groups letters, called jamo, into blocks for Korean syllables. The canonical parts of 꺚 are initial ᄁ, vowel ᅣ and final consonant ᆽ; the familiar compatibility forms are ㄲ, ㅑ and ㅈ. This gives its spelling structure, not a word-level definition.

Hangul was designed to write Korean with letters tied to its sounds. Earlier Korean writing used Hanja, Chinese characters in Korean texts, and Idu, methods that adapted those characters to write Korean. Hangul's creation is recorded in December 1443; its explanatory manuscript, 훈민정음 (“Correct Sounds for Instructing the People”), was completed in 1446.

Some scholars propose that Phags-pa, a script used in the Mongol era, influenced parts of Hangul's design; this remains a theory about the script, not evidence that 꺚 itself was borrowed. Hangul later appeared in songs, fiction, letters, inscriptions and memorials. In 1894, a reform gave Hangul official status in documents while mixed writing with Hanja continued.

How do I type 꺚?

Use a Korean 2-set keyboard: ㄲ, ㅑ, then ㅈ. On the standard QWERTY-labeled layout, those keys are Shift+R, I, W; the Korean input method composes 꺚.

Unicode's canonical jamo sequence is 꺚. Normalization can convert it to 꺚; pasted compatibility jamo ㄲㅑㅈ may stay separate.

Fonts vary in stroke placement and proportions. A missing box means the font lacks the glyph.

Should I send 꺚 alone?

Only if you mean that exact Korean syllable. Alone, it has no surrounding syllables to show which word it belongs to. If it arrives without context, ask what Korean word the sender intended.