trigraph /trīˈgräf/

A combination of three letters for one sound

• professorate
• professorates
• professoress
• professoresses
• professorial
• professorially
• professoriate
• professoriates
• professors
• professorship
• professorships
• proffer
• proffered
• profferer
• profferers
• proffering
• proffers
• proficience
• proficiences
• proficiencies
• proficiency
• proficient
• proficiently
• proficients
• profile