Where does “silescens” come from?

silescens (Latin) comes from Latin silesco, from Latin -sco, from Proto-Italic -skō, from Proto-Indo-European -sḱéti — Forms durative or iterative imperfective verbs...

Definitions

Ancestry of “silescens”, step by step

Step	Language	Word	Meaning
1	Latin	silesco	I become still, silent, calm, or quiet
2	Latin	-sco	Forms inchoative verbs from existing verbs,...
3	Proto-Italic	-skō	—
4	Proto-Indo-European	-sḱéti	Forms durative or iterative imperfective verbs...

Every word from Proto-Indo-European -sḱéti →Every word from Latin -sco →Every word from Latin silesco →