1. Godan verb with 'u' ending (special class), Transitive verb

   to ask; to inquire

   彼にもう一杯いかがかと問う。

2. to blame (someone) for; to accuse of; to pursue (question of responsibility); to charge with

3. to care about; to regard as important

   used in neg. formsee 問わず

4. to call into question; to doubt; to question

   usu. in passive form

Also written 訪う【とう】tou