MIXED DOUBLES
Credit: LA Times Crossword
Sylvia Burzstyn and Barry Tunick

The answers to the clues below contain two repeated words or syllables.

1. Expression of mild disapproval
2. Expression of enthusiasm
3. Extinct bird
4. Dance popular in 1890's
5. Ballroom dance of Latin American origin
6. Ballet dancer wear
7. Loose-fitting dress
8. Endearment for Grandma
9. Excessive  ornateness
10. Affectedly showy, as in dress
11. Dental woe
12. Carpet material

Answers:

1. Tut tut
2. Hubba hubba
3. Dodo
4. Cancan
5. Cha-cha
6. Tutu
7. Muu muu
8. Nana
9. Frou-frou
10. Chi-chi
11. Tartar
12. Berber