Where does “sibilandus” come from?

sibilandus (Latin) comes from Latin sībilō, from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

Definitions

Ancestry of “sibilandus”, step by step

StepLanguageWordMeaning
1Latinsībilōto hiss
2Latin-ōsuffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
3Proto-Indo-European-ōDerives nouns from roots
Every word from Proto-Indo-European -ō →Every word from Latin -ō →Every word from Latin sībilō →