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

• dressing
• dressing case
• dressing down
• dressing gown
• dressing room
• dressing sack
• dressing sacque
• dressing station
• dressing table
• dressmaker
• dressmaker's model
• dressmaking
• dressy
• Drew
• drey
• Dreyfus
• drib
• dribble
• dribbler
• dribbling
• driblet
• dribs and drabs
• dried
• dried apricot
• dried fruit