sink / be submerged / subside / be depressed / aloes

slippery / slip / flunk / slide

(grammar) pronoun / (figuratively) synonym

a sign

effort; exertion; diligence

edge; end; corner; margin; tip / extremity; outskirts; boundary / hem / origin; source; starting point / end point; goal; objective; aim / limit; boundary

a traditional Japanese children's game that is similar to the game red rover

mailbox / (Internet) email inbox

an attractive girl or young woman who stands outside a store to attract customers

dead end, road closure, cul-de-sac