- arithmetic progressions
- arithmetics
- arithmetic sequence
- arithmetic series
- Arizona
- Arizonan, Arizonian
- arizonans
- arizonas
- arizonians
- ark
- arkansans
- Arkansas
- arkansases
- arkansians
- frowning
- frowningly
- frownless
- frown on
- frown on sb
- frown on sth
- frown on/upon sb/sth
- frowns
- frown upon
- frown upon sb
- frown upon sth