distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

to know, be aware of / to learn, acquire, / to be acquainted with, to know (someone) / (colloquial, in the negative) to care in the least about, to be concerned with,

break, destroy, tear / break, violate, infringe / defeat, beat / (software) crack, break a password

stem or continuative form of 知る (shiru) [godan]

Alternative spelling of 物知り: a person with broad knowledge, a knowledgeable person

break / cut

demon, evil spirit / sorcery, witchcraft

demon, devil, evil spirit, evil influence

(literally) know the other side and yourself, a hundred battles will not be perilous