Unclued lights (including one hyphened) are of a kind. The theme word must be highlighted in the grid.

Across

1    Require clothing true eccentric altered (8)

8    Axes reportedly in bags (4)

11    Anything mischievous gets uncovered (5)

13    Sadly hugging Romeo, starts to offer love and pines (7)

14    Roman scholar in V&A takes over (5)

15    Gangster’s girl from America caught shellfish (7)

17    I demand to pay revered Norse lady (4)

18    Foreign pal’s husband in US 41 (5)

19    Marble bust by current earthwork (7)

23    Albert has hatred for medieval estate (7)

24    Parasite in bouquet given to mother (6)

25    A sailor grasps coppers in compound (8)

26   ...