快要 (kuài yào)

nearly at the point of (doing sth); about to (do sth)

Character breakdown

快 (kuài) · 7 strokes

Phonosemantic compound. 忄 represents the meaning and 夬 represents the sound.
要 (yāo) · 9 strokes

Pictograph of two hands grabbing a woman's (女) waist. The current meaning "want" is a phonetic loan. The original meaning "waist" is now written as 腰.