An unglossed verb form ᴱQ. fundu- or funduna- appearing drafts of the Oilima Markirya from around 1930, appearing only in inflected forms like funduváre (future) or fundunár (PE16/57, 60). Gilson, Welden and Hostetter suggest that it might have been an onomatopoeic verb meaning “pound” or “thunder”.

Neo-Quenya: Damien Bador suggested adapting ᴺQ. fundu- as a verb for “to thunder” in Neo-Quenya (though I don’t have a record of the context of his suggestion). I also think this verb is worth adapting, but would change it to ᴺQ. hundu- since generally fu became hu in Quenya of the 1950s and 60s.