Psych out
1.
to intimidate or frighten psychologically, or make nervous (oftenfollowed by out): to psych out the competition.
2.
to prepare psychologically to be in the right frame of mind or to giveone’s best (often followed by up): to psych oneself up for an interview.
3.
to figure out psychologically; decipher (often followed by out): to psych out a problem.