| Irregular mathematical shape | 28 |
| Irregular impulsive moves | 25 |
| Irregular glacial mass | 22 |
| Irregular fighter (Var.) | 24 |
| Irrational, to mathematicians | 29 |
| Irrational numbers, in math | 27 |
| Iroquois Nation people | 22 |
| Iroquois League nation | 22 |
| Iroquois League members | 23 |
| Iroquois League member | 22 |
| Iroquois Confederacy tribe | 26 |
| Iroquois Confederacy people | 27 |
| Iroquois Confederacy nation | 27 |
| Iroquois Confederacy member | 27 |
| Iroquoians' Five ___ | 24 |
| Iroquoian tribe members | 23 |
| Ironworker's workplace | 26 |
| Ironworker's union? | 23 |
| Irons's prize in 1990 | 25 |
| Irons voice in a '94 film | 29 |
| Irons of "Lolita" | 27 |
| Ironman Triathlon watchmaker | 28 |
| Ironman competition parts | 25 |
| Ironically, they may be even | 28 |
| Ironically piercing rebuke | 26 |
| Ironically funny, perhaps | 25 |
| Ironically extravagant | 22 |
| Ironic word in some obits | 25 |
| Ironic weather forecast? | 24 |
| Ironic tales' tails | 23 |
| Ironic short story writer | 25 |
| Ironic "Good luck!" | 29 |
| Ironclad defense, usually | 25 |
| Iron-___ (some transfers) | 25 |
| Iron-___ (some patches) | 23 |
| Iron-___ (decals or patches) | 28 |
| Iron-rich green veggie | 22 |
| Iron-pumpers' targets | 25 |
| Iron-pumpers' displays | 26 |
| Iron-pumper's unit | 22 |
| Iron-pumper's pride | 23 |
| Iron-pumper's place | 23 |
| Iron-pumper's count | 23 |
| Iron-poor blood condition | 25 |
| Iron-on image of a blaze? | 25 |
| Iron-deficiency problem | 23 |
| Iron-containing: Prefix | 23 |
| Iron-containing pigments | 24 |
| Iron-containing pigment | 23 |
| Iron- -- (patch types) | 22 |
| Iron worker's union | 23 |
| Iron wear for Dumas's man | 29 |
| Iron pumpers develop them | 25 |
| Iron pumper's unit | 22 |
| Iron pumper's target | 24 |
| Iron pumper's routine | 25 |
| Iron pumper's pride | 23 |
| Iron pumper's muscle | 24 |
| Iron pumper's count | 23 |
| Iron products in a salon? | 25 |
| Iron ore, to a steel mill | 25 |
| Iron or stone follower | 22 |
| Iron or star: Comb. form | 24 |
| Iron or shovel preceder | 23 |
| Iron object seen by Ezekiel? | 28 |
| Iron Man co-creator Larry | 25 |
| Iron maker's locale | 23 |
| Iron Maiden's Steve | 23 |
| Iron Maiden's mascot | 24 |
| Iron Maiden's label, once | 29 |
| Iron Maiden lead singer | 23 |
| Iron John creator Robert | 24 |
| Iron horse's snort | 22 |
| Iron hook with a handle | 23 |
| Iron deficiency problem | 23 |
| Iron Butterfly classic | 22 |
| Iron and zinc compounds | 23 |
| Iron and Bronze, for two | 24 |
| Irked, with "off" | 27 |
| Irk one's sweetheart? | 25 |
| Irishman's darling | 22 |
| Irishman or Welshman, e.g. | 26 |
| Irish-themed Vegas casino | 25 |
| Irish-born actress McKenna | 26 |
| Irish writer O'Brien | 24 |
| Irish wit and playwright | 24 |
| Irish weather forecast? | 23 |
| Irish Tony winner Patrick | 25 |
| Irish Sweepstakes figures | 25 |
| Irish stew ingredients | 22 |
| Irish statesman ___ de Valera | 29 |
| Irish statesman Eamon De ___ | 28 |
| Irish statesman de Valera | 25 |
| Irish statesman Cosgrave | 24 |
| Irish Spring ingredient | 23 |
| Irish Spring competitor | 23 |
| Irish Spring alternative | 24 |
| Irish spider's windfall? | 28 |
| Irish singer O'Connor | 25 |
| Irish seaport or its county | 27 |