adjectival noun or quasi-adjective, noun

  1. mystery, something inexplicable, wonder, miracle. Messages.yoji.
  2. unfathomable (of a Buddha's abilities).

numeric

  1. 10^64 (or 10^80).

Variations

Pronunciation Kanji Kana Is Common
不可思議 ふかしぎ

Contained Kanji Breakdown

negative, non-, bad
 (4th, N4)
cliff (厂) variant
divining, fortune-telling, divination or katakana to radical (no. 25)
ボク うらな.う うらない (Kentei Pre-1)
can, passable, mustn't
カ コク -べ.き (5th)
street, ward, town
チョウ テイ チン (3rd, N1)
mouth
くち コウ ク (1st, N4)
think
おも.う シ おぼ.す (2nd, N4)
rice field, rice paddy
た デン たん (1st, N4)
heart, mind, spirit
こころ シン (2nd, N4)
deliberation, consultation, debate
ギ かた のり (4th, N3)
say, word
い.う こと ゲン (2nd, N4)
dot, tick or dot radical (no. 3)
チュ (Kentei 1)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
mouth
くち コウ ク (1st, N4)
righteousness, justice, morality
ギ よし ただし (5th, N1)
sheep(羊) variant
to divide
king, rule, magnate
オウ -ノウ おお (1st, N3)
ego, I, selfish
わが- われ わ (6th, N1)
hand, hand radical (no. 64)
シュ
halberd, arms, festival car
ほこ カ ほこづくり (Kentei 1)
katakana no radical (no. 4)
ヘツ えい よう (Kentei 1)
piling, ceremony radical (no. 56)
ヨク いぐるみ (Kentei 1)