thunder is ukrumo

ukrumo = thunder (noun) (some things Google found for "ukrumo": a very rare term; occurs as bad OCR of a handful of older texts; appears on several gobbledygook webpages; similar Ekrum is a rare last name; similar UKRumors is a Twitter account that has not been recently updated)

Word derivation for "thunder" :
Basque = trumoi, Finnish = ukkonen
Miresua = ukrumo

The Finnish word ukkonen is derived from Ukko, the god of heaven in Finnish mythology.

The word thunder appears once in Alice's Adventures in Wonderland, in chapter 8, The Queen's Croquet-Ground.

"Get to your places!" shouted the Queen in a voice of thunder, and people began running about in all directions, tumbling up against each other....