agar or agar jelly/ʹaygah/ noun

• in trouble
• introvert
• intrude
• intruder
• intrusion
• intrusive
• in trust
• intrust
• in truth
• intubate
• intuit
• intuition
• intuitionism
• intuitive
• intumesce
• in turn
• intussusception
• in twain
• in two shakes (of a lamb's tail)
• Inuit
• Inuktitut
• inunction
• inundate
• in/under no circumstances
• in/under the circumstances