sesquicentenary/ˌseskwisenʹteenəri, -ʹtenəri/ noun (pl -ies) (pl sesquicentenaries)

• athenaeum
• Athenian
• atheroma
• atherosclerosis
• at His/Her Majesty's pleasure
• athlete
• athlete's foot
• athletic
• athletics
• athletic support
• at home
• -athon
• a thorn in somebody's flesh/side
• a thought
• athwart
• -atic
• -ation
• at issue
• at it
• -ative
• at knifepoint
• atlantes
• Atlantic
• Atlantic Standard Time
• at large