Where does “fanboat” come from?

fanboat (English) comes from English Fan, from English fanatic, from French fanatique, from Latin fānāticus, from Latin -aticus, from Latin -ātus, from Proto-Italic -ātos, from Proto-Indo-European -éh₂tos — Forms adjectives from nouns, indicating the possession of a thing or a quality.

Ancestry of “fanboat”, step by step

fanboat traces back through two separate lines of ancestry.

via English Fan

StepLanguageWordMeaning
1EnglishFanA diminutive of Frances
2EnglishfanaticFanatical; Showing evidence of possession by a...
3Frenchfanatiquefanatic, fanatical; fanatic
4Latinfānāticustemple
5Latin-aticusUsed to form adjectives indicating a relation to...
6Latin-ātused
7Proto-Italic-ātos
8Proto-Indo-European-éh₂tosForms adjectives from nouns, indicating the possession of a thing or a quality

via English boat

StepLanguageWordMeaning
1EnglishboatA craft used for transportation of goods,...
2Middle EnglishbotA seafaring vessel or watercraft; a device for...
3Old Englishbātthat which can be bitten, food, bait; boat, ship,...
4Proto-West Germanicbaitboat, ship
5Proto-Germanicbaitazboat, ship
6Proto-Indo-Europeanbʰeyd-to split
7Proto-Indo-Europeanbʰey-bee
Every word from Proto-Indo-European -éh₂tos