Cassatt
biographical name
Cas·satt kə-ˈsat 
Mary Stevenson 1844–1926 American painter in France
- in all seriousness
- in all sincerity
- in all someone's life
- in all weathers
- in all/everything but name
- in alt
- in altissimo
- in ambush
- in an unfavorable light
- in and ava
- in and out
- in annoyance
- in answer
- in anticipation of
- in antis
- in any case
- in any event
- in any way, shape, or form
- in appearance
- in apple-pie order
- in appreciation of
- in arms
- in arrears
- in arrears with
- in ascending order