CHASM
NOUNS
► ABRUPT a chasm, an abyss; an abrupt or steep place; a precipice → 1624 obs.
► ABYSM a profound chasm or gulf; any deep immeasurable space; an abyss → 1495
► GAPING a chasm in the earth → 1539 arch.
► GRIFF a deep narrow valley or chasm → 1788 N. Eng. dial.
Lexicophilia 