たてにとる

盾に取る

to use as a pretext; to use as an excuse; to use as grounds (for); to use to one's advantage

N3Expression
Expression, Godan verb (ru ending)
to use as a pretextto use as an excuseto use as grounds (for)to use to one's advantage
Expression, Godan verb (ru ending)
to use as a shieldto shelter behindto hide behind