An English insect name reshaped in folk etymology from Spanish cucaracha.
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The sequence below summarizes the cited forms, dates and evidence. It is not a complete scholarly history.
Cockroach looks like a compound of cock and roach, but Merriam-Webster describes it as folk etymology from Spanish cucaracha. AHD traces an obsolete cacarootch from Spanish cucaracha, ultimately related to cuca “caterpillar,” and notes English cock influenced the later form.
This page summarizes the cited sources. Follow each source for its full wording, notes and references.
Word-specific details from cited sources, with sources named beside each claim.
Merriam-Webster describes English cockroach as folk etymology from Spanish cucaracha, not a genuine modern cock + roach compound.
AHD traces the word through obsolete cacarootch from Spanish cucaracha, ultimately related to cuca “caterpillar,” and says English cock influenced the later form.
AHD cites Captain John Smith's cacarootch in a work first published in 1624.
Date evidence is source-scoped: Merriam-Webster gives 1616, the Online Etymology Dictionary gives the 1620s, and AHD's cited spelling appears in a 1624 publication; none of these dates proves coinage.
Cockroach is treated as a folk-etymology case rather than a genuine compound. Folk etymology and word-origin myths: how to check a good story
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