The phrase "superlative form" is used to describe the highest degree or quality of something. It indicates the most extreme or superior version of a characteristic or action. Full definition
Note: This powerpoint lesson reviews comparative and superlative forms of words, but I have not used those terms in this powerpoint. (uniqueteachingresources.com)
The Brazilian has been in superlative form for City this season, with a long - range equaliser at Arsenal the highlight of his season to date. (caughtoffside.com)
In superlative form over the last couple of months, Lingard would be unfortunate to lose his place to Sánchez, and deploying the ex-Arsenal man on the right wing might be Mourinho's best option for fielding both men. (footballwhispers.com)