| Scrabble Word | Definition |
| inarticulate14 | (of speech) not articulated in normal words (Can we add an example for this sense?) |
| incapacitate18 | To make someone or something incapable of doing something; to disable. |
| indoctrinate15 | To teach with a biased, one-sided or uncritical ideology; to brainwash. |
| inoperculate16 | (zoology) Having no operculum; said of certain gastropod shells. |
| inspectorate16 | An organized group of inspectors. |
| intermediate15 | Being between two extremes, or in the middle of a range. |
| interpellate14 | (obsolete) To interrupt (someone) so as to inform or question (that person about something). |
| invertebrate17 | An animal without vertebrae, i.e. backbone. |
| Scrabble Word | Definition |
| incarcerate15 | To lock away; to imprison, especially for breaking the law. |
| incorporate15 | (transitive) To include (something) as a part. |
| incriminate15 | (transitive) To accuse or bring criminal charges against. |
| individuate16 | (transitive) To make, or cause to appear, individual. |
| ingurgitate13 | To swallow greedily or in large amounts. |
| instantiate11 | (transitive) To represent (something) by a concrete instance. [from 20th c.] |
| intemperate15 | Lacking moderation, temper or control. |
| intercalate13 | To insert an extra leap day into a calendar in order to maintain synchrony with natural phenomena. |
| interpolate13 | (transitive, intransitive) To introduce (something) between other things; especially to insert (possibly spurious) words into a text. |
| interrelate11 | (transitive, intransitive) To form relationships between multiple things. |
| interrogate12 | (transitive) to question or quiz, especially in a thorough and/or aggressive manner |
| investigate15 | (transitive) To inquire into or study in order to ascertain facts or information. |
| involucrate16 | (botany) Having an involucre; involucred. |
| Scrabble Word | Definition |
| inaccurate14 | Mistaken or incorrect; not accurate. |
| inactivate15 | (transitive) To make inactive. |
| inadequate20 | Not adequate; not fit for the purpose |
| inapposite14 | inappropriate, not suitable for the situation |
| inaugurate11 | (transitive) To induct into office with a formal ceremony. |
| incinerate12 | (transitive) to destroy by burning |
| incomplete16 | Not complete; not finished |
| indefinite14 | Without limit; forever, or until further notice; not definite. |
| indelicate13 | Improper or immodest. |
| infiltrate13 | (transitive, intransitive) To surreptitiously penetrate, enter or gain access to. |
| ingratiate11 | (reflexive) To bring oneself into favour with someone by flattering or trying to please him or her. |
| innominate12 | Having no name; anonymous. |
| innumerate12 | Lacking numeracy. |
| inordinate11 | Excessive; unreasonable or inappropriate in magnitude; extreme. |
| inosculate12 | (transitive) To homogenize; to make continuous. |
| inseminate12 | To sow (to disperse or plant seeds). |
| inspissate12 | (transitive) To thicken, especially by boiling, evaporation, or condensation; condense. |
| insufflate16 | (transitive) To breathe or blow into or on. |
| intenerate10 | (transitive) To soften; tenderize. |
| intercaste12 | Between different castes. |
| Scrabble Word | Definition |
| inanimate11 | Lacking the quality or ability of motion; as an inanimate object. |
| incarnate11 | (postpositive) Embodied in flesh; given a bodily, especially a human, form; personified. |
| incondite12 | Badly-arranged, ill-composed, disorderly (especially of artistic works). |
| inculcate13 | (transitive) To teach by repeated instruction. |
| inculpate13 | (law) To imply the guilt of; to blame or incriminate. |
| incurvate14 | bending inwards. |
| indusiate10 | (botany) Furnished with an indusium. |
| inebriate11 | A person who is intoxicated, especially one who is habitually drunk. |
| infatuate12 | (transitive) To inspire with unreasoning love, attachment or enthusiasm. |
| infuriate12 | To make furious or mad with anger; to fill with fury. |
| infuscate14 | (transitive) To darken; to make black or obscure. |
| innervate12 | (anatomy, zoology) To supply (an organ or part of the body) with nerves. |
| inoculate11 | (transitive, immunology) To introduce an antigenic substance or vaccine into something (e.g. the body) or someone, such as to produce immunity to a specific disease. [from c. 1722] |
| insatiate9 | (archaic or literary) That is not satiated; insatiable. |
| insensate9 | Having no sensation or consciousness; unconscious; inanimate. |
| insinuate9 | To hint; to suggest tacitly (usually something bad) while avoiding a direct statement. |
| instigate10 | (transitive) to incite; to bring about by urging or encouraging |
| institute9 | An organization founded to promote a cause |
| integrate10 | To form into one whole; to make entire; to complete; to renew; to restore; to perfect. |
| intestate9 | Without a valid will indicating whom to leave one's estate to after death. |
| Scrabble Word | Definition |
| inchoate13 | Recently started but not fully formed yet; just begun; only elementary or immature. |
| increate10 | That exists without having been created. |
| incubate12 | (transitive) To brood, raise, or maintain eggs, organisms, or living tissue through the provision of ideal environmental conditions. |
| incudate11 | (zoology, anatomy) Of, pertaining to or having an incus (bone of the middle ear). |
| indagate10 | (transitive) to search into, investigate |
| indicate11 | To point out; to discover; to direct to a knowledge of; to show; to make known. |
| indurate9 | To harden or to grow hard. |
| infinite11 | Indefinably large, countlessly great; immense. [from 14th c.] |
| initiate8 | A new member of an organization. |
| innovate11 | (obsolete, transitive) To alter, to change into something new; to revolutionize. |
| insolate8 | (transitive) To dry in, or expose to, the sun's rays; to ripen or prepare by such exposure. |
| insulate8 | To separate, detach, or isolate. |
| intimate10 | Closely acquainted; familiar. |
| intonate8 | (transitive, intransitive, dated) To intone or recite (words), especially emphatically or in a chanting manner. |
| intubate10 | (transitive, medicine) To insert a tube into. |
| inundate9 | To cover with large amounts of water; to flood. |
| invocate13 | To invoke or implore |
| involute11 | (formal) Difficult to understand; complicated. |