insides
n. plural-onlyn. the inner parts of something, especially the organs inside a person's or animal's body. You often use this word when talking about how your stomach feels.
n. the internal parts or organs of a person, animal, or object. Typically refers to the digestive system or internal mechanisms in a general, non-technical way.
The spicy food really upset my insides.
He took the clock apart to see how its insides worked, but he couldn't put it back together.
The cold water sent a sudden, sharp shiver through her insides, making her regret the impulsive dive into the mountain lake.
Takes plural verb agreement; often used informally to refer to the stomach or bowels.
My inside is hurting.My insides are hurting.When referring to body organs or internal parts, the word is used in the plural form and requires a plural verb.