surd /sûrd/

1. Unable to be expressed in rational numbers (mathematics)
2. Voiceless (phonetics)
3. Deaf (obsolete)
4. Senseless (obsolete)

1. An irrational quantity, esp an irrational root or a sum of irrational roots (mathematics)
2. A voiceless consonant (phonetics)
3. Someone who is deaf to persuasion, rational argument, etc

• itinerate
• itinerated
• itinerates
• itinerating
• itineration
• itinerations
• -itis
• it is all up
• it is all up with
• it is hoped
• it is said
• it'll
• it may be added
• ITN
• it never rains but it pours
• it pitieth
• it's
• its
• it's a free country
• it's a small world
• it says
• it says that
• it's early days
• it seems
• itself