無 (Kanji for without)

This is the kanji for ない, although it is seldom used anymore.

Onyomi

MU	you can't say MOO without a cow!

OK, this is basically like "scorch" kanji ( 焦）　but WITHOUT the little 'head' in the center: The top of 無 is flat, WITHOUT a 'head'.

( ｘｘｘ ) な＊い

SUFFIX which turns the previous word into a negative. 金＝money。金無い＝ no money. KANA
★★☆☆☆

無料(むりょう)	free ★★★★☆ 無 (without) + 料 (ingredients / fees) = 無料 (free) free (not like Martin Luther King, I mean free like a free magazine full of articles on how to become a stripper)
無理(むり)	impossible ★★★☆☆ 無 (without) + 理 (reason) = 無理 (impossible)
無視(むし) する	to ignore or snub someone or something. ★★★☆☆ 無 (without) + 視 (peer at) = 無視 (to ignore or snub someone or something.)
xxx　の無駄(むだ)	waste ★★☆☆☆ 1/2 KANA 無 (without) + 駄 (bad quality) = 無駄 (waste ) a waste of something (time, money)

	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!!!"