Definition: "without peer"

This is an anagram - look for an indicator word that suggests mixing or rearranging letters.

'Strangely' is the anagram indicator - rearrange the letters of 'A DULL QUEEN' to form a 10-letter word meaning without peer.

Answer: UNEQUALLED | 'Strangely' indicates an anagram of 'A DULL QUEEN' = UNEQUALLED (without peer)