トン/TON/    トツ/TOTSU/    にわか.に/niwaka.ni/    とん.と/ton.to/    つまず.く/tsumazu.ku/    とみ.に/tomi.ni/    ぬかずく/nukazuku/TON/トン/    TOTSU/トツ/    niwaka.ni/にわか.に/    ton.to/とん.と/    tsumazu.ku/つまず.く/    tomi.ni/とみ.に/    nukazuku/ぬかずく/

suddenly;  immediately;  in a hurry

Radical: (face).   Strokes: 13画.   Elements: 貝目ハ頁屯.   Pinyin: dùn / .   Hangul:  [don]  [dun].

Jōyō Kanji High School.

Example compounds:
トンTONせいとんseiton】orderliness; put in order; tidying up; arranging neatly
ていとんteiton】deadlock; standstill; stalemate; set-back; abeyance
着ないとんじゃくないtonjakunai】indifferent; unconcerned
とんtontoとんとtonto】completely; not at all
とみtominiとみにtomini】suddenly; all at once; rapidly
Codepoints and classification codes:
9813Unicode
38-60JIS X 0208
1-4-9SKIP
9a4.1TKD
5178.6Four Corner
Dictionary indices:
5121Classic Nelson
6623The New Nelson Character Dictionary by A. Nelson
2788Remembering the Kanji by J. Heisig
2115Japanese Names by P.G. O'Neill
43381Daikanwajiten 「大漢和辞典」 by T. Morohashi vol. 12 p. 250