IPA: /ˈtʃɜːr.tʃliːst/
KK: /ˈtʃɜːrʧliːst/
Relating to or characteristic of a church, especially in a very prominent or extreme way.
The churchliest building in the town is the old cathedral that stands on the hill.
Churchliest → It is formed from "church" (from Old English *cirice*, meaning a place of worship) and "-liest" (a superlative suffix meaning most). The word "churchliest" means most like a church or exhibiting the qualities of a church.
Think of a place of worship ('church') and the suffix that indicates the highest degree ('-liest'). This helps you remember that 'churchliest' refers to something that is most like a church.
No commonly confused words.