IPA: /ˈtɔɪl.fəl/
KK: /ˈtɔɪl.fəl/
Describing something that requires a lot of hard work and effort; very labor-intensive.
The toilful task of building the house took several months to complete.
Comparative: more toilful
Superlative: most toilful
Toilful → It is formed from "toil" (from Old French *toiler*, meaning to labor or work hard) and "-ful" (meaning full of). The word "toilful" means full of toil or characterized by hard work.
Think of 'toil' as hard work, and remember that 'toilful' describes something that is full of hard work.