Denshi Jisho — Online Japanese dictionary

ぐあん imbecility
Noun 
ねくら dark-natured; introverted; dour; moody; insular; glum; gloomy; pessimistic
Na-adjective, Noun 
むやみ reckless; excessive
Na-adjective, Noun 
やあん dead of night; shades of night
Noun 
めいあん light and darkness; light and shade
Common word, Noun 
ぼんくら 1: stupidity; idiocy;
2: blockhead; idiot; dimwit; mediocrity
Noun 
まっくら 1: total darkness; pitch dark;
2: bleak future; poor prospects
Na-adjective, Noun 
めいあん gloom; shade
Noun 
ゆうあん dark and secluded
Na-adjective, Noun 
真っ まっくら 1: total darkness; pitch dark;
2: bleak future; poor prospects
Common word, Na-adjective, Noun 
お先真っ おさきまっくら very bleak; dim
Na-adjective, No-adjective, Noun 
御先真っ おさきまっくら very bleak; dim
Na-adjective, No-adjective, Noun 

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