difficultduo

noun
UK /ˈdɪfɪkəlt ˈdjuːəʊ/
US /ˈdɪfɪkəlt ˈduːoʊ/

Two people who are hard to work with together.

The difficultduo made the group project take twice as long.


OTHER MEANINGS

2. A pair of tasks that are both hard to finish.

Finishing homework and cleaning my room was a difficultduo.

3. Two things that are hard to tell apart.

The twins were a difficultduo to recognize.

4. A song or act performed by two people that is hard to do.

Their dance was a difficultduo to learn.