Select the INCORRECTLY spelt word.

The correct option is screpe.

Let us analyze the spelling of each of the given options:
1. whisper: Correctly spelt. It means to speak very softly using one's breath rather than one's vocal cords.
2. ceiling: Correctly spelt. It refers to the upper interior surface of a room.
3. screpe: Incorrectly spelt. The correct English word is either scrape (which means to drag a sharp or hard implement across a surface to clean or smooth it) or crepe (a thin pancake or a light, crinkled fabric).
4. journey: Correctly spelt. It refers to the act of traveling from one place to another.

Therefore, "screpe" is the incorrectly spelt word.