焦 (Kanji for char / scorch)

Onyomi

SHOU

Don't SHOW off your cooking, that roast turkey is pretty clearly scorched in the fire.

( を ) こ＊がす	to char or scortch. Like char-broiled beef. Also, often used with hot, passionate emotions: burning with the fiiiire of looooooveeeee!!!!!!!!!!!! ★★☆☆☆
( が ) こ＊げる	it gets scorched ★★☆☆☆
( が ) あせ＊る	to be in a hurry, impatient KANA ★★★☆☆

	Meaning	Hint	Radical
無	without	NO HEAD
焦	char / scorch	HEAD

OK,without (無) is basically like the "scorch" kanji ( 焦）　but WITHOUT the little line that sticks up in the center.

As usual, we'll call the sticky-uppy line a 'head'.

So you can say,

The top of WITHOUT is flat, because it's WITHOUT a 'HEAD'.

Or, alternatively, "You're scorching my HEAD!!!"