Denshi Jisho — Online Japanese dictionary

せつ theory
Common word, Noun, Noun suffix 
とく to explain; to advocate; to preach; to persuade
Common word, Godan verb with ku ending 
かせつ hypothesis; supposition; fictional
Common word, Noun, No-adjective 
いせつ different opinion
Noun, No-adjective 
くぜつ lover's tiff
Noun 
ぐせつ foolish opinion; one's opinion
Noun 
こせつ ancient belief
Noun 
しせつ the teacher's theory
Noun 
しせつ personal opinion
Noun 
じせつ one's cherished opinion
Noun 
じせつ one's personal opinion
Noun 
ずせつ illustration; diagram
Noun 
せつじ instructions; explanation
Noun, Suru verb 
せつゆ persuasion; convincing
Noun, Suru verb, No-adjective 
せつわ tale; narrative
Noun, Suru verb 
ひせつ secret theory
Noun 
ふせつ groundless rumor; groundless rumour
Noun 
ほせつ supplementary explanation; supplementary information
Noun, Suru verb 
るせつ groundless rumor; groundless rumour; false report
Noun 
るせつ detailed explanation
Noun, Suru verb 
くどき 1: entreaty; imploring; begging;
2: spoken portion of a song; oral recitation
Noun, Suru verb 
くどく 1: to persuade; to coax; to solicit;
2: to seduce; to make advances; to make a play; to make a pass; to put the moves on; to come on to; to hit on; to court; to woo; to romance
Godan verb with ku ending, Transitive verb 
えんぜつ speech; address
Common word, Noun, Suru verb 
かいせつ explanation; commentary; exposition; elucidation
Common word, Noun, Suru verb, No-adjective 
がくせつ theory
Common word, Noun 
しゃせつ editorial; leading article
Common word, Noun 

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