Wiktionary
psyching out
vb. (present participle of psych out English)
Usage examples of "psyching out".
But maybe Mercedes' feeble mind still knew a thing or two about psyching out her opponent.
However, he had an easy day before a cocktail party for a Russian trade delegation at the embassy, where he would fulfill his function of psyching out any possible recruits for the Company, and so he did not resent giving his time to McBride.