willy-nilly

(politics) "from the (Jordan) river to the (Mediterranean) sea", referring to the claim over all of Palestine including the territory of the State of Israel

from the cradle to the grave

to wash one's hands of

I don't know, your guess is as good as mine (literally, "the asked knows no better than the asker")

the situation is so bad that the risk of its deteriorating even more has become irrelevant; to have nothing to lose

(literally) that which God has not ordained or ordered / (idiomatic) strange, bizarre / (idiomatic) fabricated, fake / (idiomatic) appalling, hideous, horrible, terrible

(idiomatic) useless, unsatisfying

he who digs a pit for others falls in himself

third-person feminine singular past active of مَنَّ (manna)