(chiefly literary) truly; indeed; without doubt

the state of being square or even with someone, with nothing owed to the other party and nothing owing to oneself

(idiomatic) call it square with someone, call it even with someone

貸し借りなしにする: (idiomatic) call it square with someone, call it even with someone

but (literary form)

adnominal of しかるべし (shikaru beshi, “appropriate”)

to act

action; behavior

street / traffic / quality of flowing / reputation, name / understanding / in accordance with

That's right, you can say that again (that is very true), quite so, I agree