| Invasion craft (abbr.) | 22 |
| Invasion by a vice squad | 24 |
| Invalidates, as a ticket | 24 |
| Invalidated, as a contract | 26 |
| Invalidate, as a marriage | 25 |
| Invalidate, as a check | 22 |
| Invalidate in appeals court | 27 |
| Invalid befriended by Heidi | 27 |
| Invaders of Kuwait, 1990 | 24 |
| Invaders of Ancient Rome | 24 |
| Invaders conquered by Caesar | 28 |
| Invader of the Roman Empire | 27 |
| Invader of Spain: 8th century | 29 |
| Invader of Rome in 390 B.C. | 27 |
| Invader of Europe in 1241 | 25 |
| Invaded, with "on" | 28 |
| Invade in great numbers | 23 |
| Inundate Liotta's bucket? | 29 |
| Inuit, somewhat offensively | 27 |
| Inuit's neighbour | 22 |
| Inuit transportation tool | 25 |
| Inuit in a 1922 film classic | 28 |
| Intuitive good judgment | 23 |
| Intuitive college student? | 26 |
| Intuition, so to speak | 22 |
| Intuition, maybe: Abbr. | 23 |
| Intuition, figuratively | 23 |
| Intrusive southern vine | 23 |
| Intruding on the dance floor | 28 |
| Intrudes, with "in" | 29 |
| Intruders in the pantry | 23 |
| Intruder-blocking software | 26 |
| Intruded, with "in" | 29 |
| Intrude, with "in" | 28 |
| Introvert or extrovert | 22 |
| Introvert musician, perhaps | 27 |
| Introspective question | 22 |
| Introspective composition | 25 |
| Intros that come later | 22 |
| Introductory words, maybe | 25 |
| Introductory TV episode | 23 |
| Introductory studio class | 25 |
| Introductory quotation | 22 |
| Introductory language course | 28 |
| Introductory humanities class | 29 |
| Introductory Greek letters | 26 |
| Introductory drawing class | 26 |
| Introductory discourse | 22 |
| Introductory course, often | 26 |
| Introductory bit (Var.) | 23 |
| Introductory appearances | 24 |
| Introductions cliché | 23 |
| Introduction, for short | 23 |
| Introduction to the public | 26 |
| Introduction to structure | 25 |
| Introduction to Steven? | 23 |
| Introduction to science? | 24 |
| Introduction to psychology? | 27 |
| Introduction to politics? | 25 |
| Introduction to physics? | 24 |
| Introduction to physics | 23 |
| Introduction to opera? | 22 |
| Introduction to Mr. Nice Guy? | 29 |
| Introduction to Mr. Nice Guy | 28 |
| Introduction to marketing? | 26 |
| Introduction to Latin? | 22 |
| Introduction to Hebrew? | 23 |
| Introduction to geometry? | 25 |
| Introduction to English? | 24 |
| Introduction to economics? | 26 |
| Introduction to culture? | 24 |
| Introduction to culture | 23 |
| Introduction to conservatism | 28 |
| Introduction to Chinese? | 24 |
| Introduction to China? | 22 |
| Introduction to chemistry? | 26 |
| Introduction to chemistry | 25 |
| Introduction to calculus? | 25 |
| Introduction to biology? | 24 |
| Introduction to an opinion | 26 |
| Introduction to a book | 22 |
| Introduction to a Bach fugue | 28 |
| Introduction or preface | 23 |
| Introduction introduction | 25 |
| Introduction in an NBC sitcom | 29 |
| Introduction for Romeo? | 23 |
| Introduction followers | 22 |
| Introduces, as an ingredient | 28 |
| Introduces new software | 23 |
| Introduces for discussion | 25 |
| Introducer of 45-rpm records | 28 |
| Introduced to the world | 23 |
| Introduced surreptitiously | 26 |
| Introduce, as something new | 27 |
| Introduce, as an issue | 22 |
| Introduce, as a new year | 24 |
| Introduce to solid foods | 24 |
| Introduce to solid food | 23 |
| Introduce to knight life? | 25 |
| Introduce to knight life | 24 |