Where does “cotlaid” come from?

cotlaid (Middle Irish) comes from Old Irish ·cotli, from Old Irish tuilid, from Proto-Slavic toliti, from Proto-Indo-European (s)telH- — to be silent, be still.

Ancestry of “cotlaid”, step by step

StepLanguageWordMeaning
1Old Irish·cotli—
2Old Irishtuilidto sleep
3Proto-Slavictolitito calm, to soothe
4Proto-Indo-European(s)telH-to be silent, be still
Every word from Proto-Indo-European (s)telH- →Every word from Proto-Slavic toliti →Every word from Old Irish tuilid →