Foulest

2 clues
Most disgusting
Most abysmal, as weather
Similar answers:
Ablest
Achillesteendon
Achillesten
Achillestendon
Achillestendons
Acriticofourownwork
Actfour
Afoul
Afoulof
Agefour
Ahomeofourown
Alestake
Allfours
Allofourpatrons
Almostonefourth
Amplest
Andfoundouti
Andfour
Andsixtyfour
Angelesthatyou