Denshi Jisho — Online Japanese dictionary

堕つ おつ 1: to fall down; to drop;
2: to fail (e.g. exam);
3: to crash; to degenerate; to degrade
Godan verb with tu ending, Intransitive verb 
堕す だす to degenerate; to lapse into
Godan verb with su ending, Intransitive verb 
堕胎 だたい abortion; feticide
Common word, Noun, Suru verb 
堕落 だらく depravity; corruption; degradation
Common word, Noun, Suru verb 
堕獄 だごく going to hell; falling into hell
Noun 
堕罪 だざい sinking into sin
Noun, Suru verb 
堕ちる おちる 1: to fall down; to drop; to fall (e.g. rain); to sink (e.g. sun or moon); to fall onto (e.g. light or one's gaze); to be used in a certain place (e.g. money);
2: to be omitted; to be missing;
3: to decrease; to sink;
4: to fail (e.g. exam or class); to lose (contest, election, etc.);
5: to crash; to degenerate; to degrade; to fall behind;
6: to become indecent (of a conversation);
7: to be ruined; to go under;
8: to fade; to come out (e.g. a stain); to come off (e.g. makeup); to be removed (e.g. illness, possessing spirit, name on a list);
9: to fall (into someone's hands); to become someone's possession;
10: to fall (into a trap); to fall (for a trick);
11: to give in; to give up; to confess; to flee;
12: to fall; to be defeated; to surrender;
13: to come to (in the end); to end in;
14: to fall (in love, asleep, etc.);
15: to swoon (judo);
16: to consent; to understand;
17: (Computer terminology) to crash; to freeze;
18: (of animals) to die;
19: to move to the depths
Ichidan verb, Intransitive verb 
堕ろす おろす to abort (an embryo or fetus) (negative nuance)
Godan verb with su ending 
堕する だする to degenerate; to lapse into
Suru verb - special class, Intransitive verb 
堕弱 だじゃく 1: apathetic; lackadaisical; spiritless; gutless; weak-willed; unenterprising; enervated; effete;
2: physically weak; feeble; effeminate
Out-dated kanji, Na-adjective, Noun 
堕力 だりょく 1: inertia; momentum;
2: force of habit
Noun 
自堕落 じだらく depravity; self-indulgence
Na-adjective, Noun 
堕胎医 だたいい abortionist
Noun 
堕天使 だてんし fallen angel; demon
Noun 
堕胎罪 だたいざい an illegal abortion
Noun 
堕落腐敗 だらくふはい debasement; corruption; degradation
Noun 
堕落坊主 だらくぼうず apostate priest
Noun 
腐敗堕落 ふはいだらく debasement; corruption; degradation
Noun 
金剛薩堕 こんごうさった Vajrasattva; Supreme Being of tantric Buddhism
Noun 
人間の堕落 にんげんのだらく the fall of man
Noun 

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