Thundering

·adj Emitting thunder.

II. Thundering ·noun Thunder.

III. Thundering ·adj Very great;

— often adverbially.

IV. Thundering ·p.pr. & ·vb.n. of Thunder.

thundering
Very; exceedingly. A vulgar word used with pretty much the same latitude as the English devilish. I...

Dictionary of American Words And Phrases by John Russell Bartlett.
thundering
A sailor's emphatic word for anything choice, large, fine, or powerful. ...

The Sailor's Word-Book