mosttiringwork

noun
UK /məʊst ˈtaɪərɪŋ wɜːk/
US /moʊst ˈtaɪərɪŋ wɜːrk/

The hardest job that makes you feel very sleepy and worn out.

Carrying all those heavy boxes up the stairs was the mosttiringwork I have ever done.


OTHER MEANINGS

2. A task that uses up all your energy over a long time.

Cleaning the whole house alone felt like mosttiringwork.

3. Any activity that leaves you completely worn out afterward.

Running the marathon was mosttiringwork for the whole team.

4. A job that is both physically and mentally draining.

Studying all night before the exam was mosttiringwork.