| ill | (adjective) affected by an impairment of normal physical or mental function | Synonyms: sick |
|---|
| (adjective) distressing | - |
| (adjective) resulting in suffering or adversity | - |
| (adjective) indicating hostility or enmity | - |
| (adjective) presaging ill fortune | Synonyms: inauspicious, ominous |
| illative | (adjective) relating to or having the nature of illation or inference | Synonyms: inferential |
|---|
| (adjective) expressing or preceding an inference | - |
| (adjective) resembling or dependent on or arrived at by inference | Synonyms: inferential |
| illegal | (adjective) prohibited by law or by official or accepted rules | - |
|---|
| illegible | (adjective) (of handwriting, print, etc.) not legible | - |
|---|
| illegitimate | (adjective) of marriages and offspring; not recognized as lawful | - |
|---|
| (adjective) contrary to or forbidden by law | Synonyms: illicit, outlaw, outlawed, unlawful |
| illiberal | (adjective) narrow-minded about cherished opinions | Synonyms: intolerant |
|---|
| illicit | (adjective) contrary to accepted morality (especially sexual morality) or convention | - |
|---|
| (adjective) contrary to or forbidden by law | Synonyms: illegitimate, outlaw, outlawed, unlawful |
| illimitable | (adjective) without limits in extent or size or quantity | Synonyms: limitless, measureless, unmeasured |
|---|
| illiterate | (adjective) not able to read or write | - |
|---|
| (adjective) lacking culture, especially in language and literature | - |
| (adjective) uneducated in the fundamentals of a given art or branch of learning; lacking knowledge of a specific field | Synonyms: ignorant |
| illogical | (adjective) lacking in correct logical relation | Synonyms: unlogical |
|---|
| (adjective) lacking orderly continuity | Synonyms: confused, disconnected, disjointed, disordered, garbled, scattered, unconnected |
| illuminated | (adjective) provided with artificial light | Synonyms: lighted, lit, well-lighted |
|---|
| illuminating | (adjective) tending to increase knowledge or dissipate ignorance | Synonyms: enlightening, informative |
|---|
| illusional | (adjective) marked by or producing illusion | Synonyms: illusionary |
|---|
| illusionary | (adjective) marked by or producing illusion | Synonyms: illusional |
|---|
| illusive | (adjective) based on or having the nature of an illusion | Synonyms: illusory |
|---|
| illusory | (adjective) based on or having the nature of an illusion | Synonyms: illusive |
|---|
| illustrative | (adjective) clarifying by use of examples | Synonyms: exemplifying |
|---|
| (adjective) serving to demonstrate | Synonyms: demonstrative |
| illustrious | (adjective) having or conferring glory | - |
|---|
| (adjective) widely known and esteemed | Synonyms: celebrated, famed, famous, far-famed, notable, noted, renowned |