{5} ?*spe-spónd/spn̥d-

http://lila-erc.eu/data/lexicalResources/LIV/id/Themes/3021074431084247619594050320508045962516777093849437004845 <https://ontolex.github.io/morph/Morph>

perfect stem
{5} ?*spe-spónd/spn̥d- 
PIE 

data from the linked data cloud