SRD5:Expertise
From Dungeons and Dragons Wiki
This material from the 5th edition (2014) SRD v5.1 is published under the OGL and CC-BY |
Your proficiency bonus is doubled for any ability check you make that uses...[this]...proficiency.[1]
Usually this is reference to the Rogue expertise. But some feat and features refer to 'expertise' in a similar fashion meaning double the proficiency bonus for that skill or tool.
Sources and Notes
- SRD-OGL v5.1 - 5th edition SRD