Richard Siddaway on approved verbs in Powershell:
The other very useful set information are the synonyms for verbs that you shouldn’t use. For instance don’t use Append, Attach, Concatenate or Insert – use Add. Some of this information is contextual though as you shouldn’t use Pop or Out as a synonym for Exit BUT Pop is perfectly valid when removing an item off a stack (Pop-Location is the only cmdlet I know of that works in that way).
Read on for a link to the approved verbs list.