Uppermost

3 clues
Top-__
On top
Highest
Similar answers:
Actormostel
Alamothermostat
Atesupper
Boxsupper
Cupped
Cuppedoneshands
Cupper
Earltupper
Fixerupper
Furthermost
Gettheupperhand
Glovepuppet
Gottheupperhand
Grouchofamuppet
Handpuppet
Handpuppets
Hastheupperhand
Huppert
Innermost
Isabellehuppert