IPA: /ˈdɜːrtɪnəs/
KK: /ˈdɜrtɪnəs/
The condition of being unclean or having dirt on something.
The dirtiness of the kitchen made it hard to cook.
Dirtiness → It is formed from "dirt" (from Old English "dirt", meaning filth or soil) and "-iness" (a suffix meaning the quality of being). The word "dirtiness" refers to the quality of being dirty or unclean.
Think of 'dirt' as filth and remember that 'dirtiness' means the quality of being dirty.