Denshi Jisho — Online Japanese dictionary

正す ただす 1: to correct; to reform; to amend; to redress;
2: to adjust; to straighten;
3: to ascertain; to confirm; to verify; to make sure of;
4: to enquire of someone about something (inquire); to question
Common word, Godan verb with su ending, Transitive verb 
糺す ただす to ascertain; to confirm; to verify; to make sure of
Common word, Godan verb with su ending, Transitive verb, Usually written using kana alone 
糾す ただす to ascertain; to confirm; to verify; to make sure of
Godan verb with su ending, Transitive verb, Usually written using kana alone 
質す ただす to enquire of someone about something (inquire); to question
Godan verb with su ending, Transitive verb, Usually written using kana alone 
糺弾 きゅうだん blame
Noun, Suru verb 
糺明 きゅうめい searching examination; establishing the facts through thorough examination
Noun, Suru verb 
糺問 きゅうもん inquiry; enquiry
Noun, Suru verb 
弾正台 ただすつかさ Imperial Prosecuting and Investigating Office (under the ritsuryo system)
Noun 

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