| Iroquois |
a member of an American Indian confederacy of New York State that includes the Cayuga, Mohawk, Oneida, Onondaga, Seneca, and Tuscarora tribes. [3 definitions] |
| irradiate |
to expose to radiation, esp. as a medical treatment. [3 definitions] |
| irradiation |
emission of electromagnetic radiation, or the state of being exposed to such radiation. [2 definitions] |
| irrational |
lacking in reason, sense, or judgment. [3 definitions] |
| irreclaimable |
impossible to reclaim, redeem, or reform. |
| irreconcilable |
not capable of being brought into harmony or agreement; incompatible. [2 definitions] |
| irrecoverable |
not capable of being recovered or regained; irretrievable. [2 definitions] |
| irredeemable |
not capable of being bought back or paid off; not redeemable. [3 definitions] |
| irredentist |
a person who advocates annexing or recovering territories bordering his or her own country, because their populations have strong ties to his or her country's people. |
| irreducible |
not capable of being reduced to a simpler or smaller condition, form, or quantity. |
| irrefragable |
impossible to refute or dispute; undeniable. |
| irrefutable |
impossible to refute or disprove; indisputable. |
| irregular |
uneven in shape, arrangement, surface, or the like. [10 definitions] |
| irregularity |
the condition or quality of being irregular. [3 definitions] |
| irrelevance |
the quality or condition of not being related or connected to the matter or situation at hand. [2 definitions] |
| irrelevant |
not related to or connected with the matter or occasion at hand. |
| irreligious |
not practicing or believing in any religion; not motivated by religious considerations or precepts. [2 definitions] |
| irremediable |
impossible to cure, repair, or correct. |
| irremissible |
not subject to forgiveness; unpardonable. [2 definitions] |
| irremovable |
impossible to remove or obliterate. |
| irreparable |
impossible to repair, restore, or rectify. |