1. Introduces a conditional clause
   "I will go to university if I can afford it" 
2. Despite being
   "he's nice, if rather patronizing" 
3. Every time that
   "if I call you are always engaged"
   - whenever, when

Encyclopedia: If

• chuck up
• chuck up the sponge
• chuck wagon
• chuck-full
• chuck-will's-widow
• chucker-out
• chuckhole
• chuckle
• chucklehead
• chuckwalla
• chuddar
• chufa
• chuff
• chuffed
• chug
• chugger
• Chukaku-Ha
• Chukchi
• Chukchi language
• Chukchi Peninsula
• Chukchi Sea
• chukka
• chukka boot
• chukker
• chukker-brown