To Conceal, To Hide
transitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means endure so the verb vocab version is to endure.
Those who are able to endure are those who have had a lot of training. Who has had the most training of anyone? Ninjas. What group are they part of? The shinobi (しの).
Why do we have to endure their insults, dad?