"Illinoisan" Natural Recordings by Native Speakers
A person from the state of Illinois in the United States.
"enlighten" (not "illighten") means to inform (someone) about something in a way that helps them understand or become more aware of it.
Illimani is a mountain peak located in the Cordillera Real mountain range in Bolivia. It is the highest peak in the country, standing at 6,437 meters (21,110 feet) above sea level. The name "Illimani" is derived from the Aymara language and means "distant mother" or "far-off mountain".
The word "illimitableness" refers to the quality of being unlimited or boundless. It describes something that has no limits, boundaries, or fixed extent.