Further

8 clues
Aid
Promote
Additional
More out there
Give an impulse to
Advance, as a cause
And another thing...
And what's more . . .
Similar answers:
Aattheraces
Abidebytherules
Abother
Abouther
Aboveallothers
Abovetheweather
Abrother
Abrothertheres
Acidesther
Acrosstheriver
Acumenbrother
Acutaboveothers
Acuttherest
Adayattheraces
Adazelikenoother
Addtogether
Adither
Adoptivefathers
Adrinkfortheroad
Aether