Diereses

3 clues
Marks over vowels
Diphthong dividers
Umlauts' kin (Var.)
Similar answers:
Abritishsoldier
Antitheses
Asaparenthesestimable
Asoldiersplay
Bawdier
Beadier
Bloodier
Bombardier
Boysoldiers
Brigadier
Britishsoldiers
Buffalosoldier
Burmesesetter
Burmesestevens
Candier
Chaudiere
Cheeses
Cheeseshop
Cheeseslicer
Cheesesnuffle