Where does “sillycide” come from?

sillycide (English) comes from English silly, from Middle English seely, from Old English sǣliġ, from Proto-West Germanic sālīg, from Proto-West Germanic -g, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

sillycide (English): Suicide

Definitions

  1. Suicide

Ancestry of “sillycide”, step by step

sillycide traces back through two separate lines of ancestry.

via English silly

StepLanguageWordMeaning
1EnglishsillyLaughable or amusing through foolishness or a...
2Middle Englishseelyhappy
3Old Englishsǣliġblessed, fortunate; happy, prosperous, blessed
4Proto-West Germanicsālīgblissful, prosperous, happy
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic

via English suicide

StepLanguageWordMeaning
1EnglishsuicideIntentional killing of oneself; A particular...
2Latinsuicidiumsuicide
3Latin-cīdium
4Latin-iumSuffix used to form abstract nouns, sometimes...
5Latin-iusforming adjectives from nouns; nominative neuter...
6Proto-Italic-jōsForms comparative adjectives
7Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -ḱos