Lumpy (adjective)

1. Having an irregular shape with protuberances.
2. Being uneven or irregular in shape or texture.
3. Being bumpy or not smooth.

Origin:

The word "lumpy" is believed to have originated from the middle english word "lumpe" which means a small hill or a protuberance on the surface. later in the 16th century, it was used to refer to objects that had an irregular shape or a protruding surface.

Examples:

1. The couch was old and lumpy, making it uncomfortable to sit on.
2. The cake was lumpy and uneven, it looked like it was made by an amateur.
3. The gravy was lumpy and not smooth, it was obvious that it was made with flour instead of cornstarch.
4. The blanket was made of wool, it was warm but lumpy.
5. The mashed potatoes were lumpy, it was clear that they were made by hand instead of with a mixer.