ICA

1. Institute of Chartered Accountants (ICAEW of England and Wales; ICAI of Ireland)
2. Institute of Contemporary Arts
3. Invalid Care Allowance (now replaced by Carer's Allowance)

• sort of
• sort out
• sort out the men from the boys
• sorts
• sorus
• SOS
• sosatie
• sosaties
• SOSed
• SOSes
• SOSing
• so so
• so-so
• soss
• sossed
• sosses
• sossing
• sossings
• sostenuto
• sostenutos
• sot
• SOT
• Sotadean
• Sotadic
• soterial