Why do so many 'smart' people think that the plural of octopus is octopi when, clearly, it has a root word in Greek, not Latin, and cannot be pluralised in this way? -
What Is an Irregular Plural Noun? Usage Guide and Examples | YourDictionary
Cacti or Cactuses? A Guide to Irregular Plurals | Knowadays
Cactus definition and meaning | Collins English Dictionary
Cactuses or Cacti – Which is Correct? - Writing Explained
Cacti or Cactuses: What's the Plural of Cactus? - The Blue Book of Grammar and Punctuation
English plurals - Wikipedia
I built some shelves for all of my cactus. : r/arizona
Oxford Junior Illustrated Dictionary | PDF | Adverb | Noun
Cacti Vs Cactuses - Which Is The Correct Plural Usage
Bradleya Vol 1-31.pdf - British Cactus & Succulent Society
ivy_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com