We found one dictionary that defines the word tarantulous:

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1. tarantulous: Wiktionary

Definitions from Wiktionary (tarantulous) ▸ adjective:  Of or relating to a tarantula. ▸ Words similar to tarantulous ▸ Usage examples for tarantulous ▸ Idioms related to tarantulous ▸ Wikipedia articles (New!) ▸ Popular nouns described by tarantulous ▸ Words that often appear near tarantulous ▸ Rhymes of tarantulous ▸ Invented words related to tarantulous