Chasmous

Then was heard the mountain torrent Swelling with a mighty current Craggy rocks and boulders o'er Like the sullen thunders' roar In the chasmous dell beneath, Hearing which the Elephant Down that perilous descent Madly plunging met his death.

Source: wiktionary

There's always an arranged marriage. I can attest to their efficacy – though perhaps you should try an age gap less chasmous than Cesco's. Or mine! Also, it seems to me that if a woman wooed you, you could marry her.

Source: wiktionary

I stand around them, I talk, I laugh, because I have to make believe that I can talk and laugh with people my age and ignore the chasmous depths whirling in blackness between us.

Source: wiktionary

Where once, off Cape Musandam, Indian sailors would pause for the sake of a propitious voyage to cast flowers, coconuts and fruit, or launch a model boat, upon the waters, chasmous oil tankers and cargo ships now process blithely and ...

Source: wiktionary