(~s, ~ing, ~ed)
If you ~ the truth about something, you find out what it is, especially by making a deliberate effort to do so. (FORMAL)
Through doing this, the teacher will be able to ~ the extent to which the child understands what he is reading...
Once they had ~ed that he was not a spy, they agreed to release him...
Take time to ~ what services your bank is providing, and at what cost.
= establish
VERB: V n, V that, V wh