do’s and don’ts
The set phrase for rules of what to do and what not to do.
Write do’s and don’ts. The apostrophe in do’s keeps the plural from reading as dos. Don’ts already carries the apostrophe of the contraction. Dos and don’ts is also seen. We use do’s and don’ts.
Examples
Usea list of do’s and don’ts
Avoida list of do’s and donts