IPA: /ˈfʌn.dʒɪˌsaɪd/
KK: /ˈfʌŋɪˌsaɪd/
A chemical that kills or stops the growth of fungi, which are organisms that can cause diseases in plants and animals.
Farmers often use fungicide to protect their crops from fungal infections.
Fungicide → It is formed from "fungus" (from Latin *fungus*, meaning mushroom or fungus) and "-cide" (from Latin *caedere*, meaning to kill). The word "fungicide" refers to a substance that kills fungi.
Think of a substance that 'kills' ('-cide') 'fungi' ('fungus') — that's why fungicide means something that kills fungi.
No commonly confused words.