悱

fěi = f + ei3

to want to articulate one's thoughts but be unable to

悱 character breakdown

悱
- 忄
- 非
  - 三
    - 一
    - 二
      - 一
  - 丨
  - 丿

忄

xi̅n = xi + (e)n1

Kangxi radical 61 (心) as a vertical side element

Looks a bit like a flail.

非

fe̅i = f + ei1

abbr. for 非洲[Fei1 zhou1], Africa

非

fe̅i = f + ei1

to not be; not / wrong; incorrect / non-; un-; in-; de- / to reproach; to blame / (coll.) to insist on; simply must

非 = 三 + 丿 + 丨 : Mnemonic symbol: a negative film (photography)

非 = 三 + 丿 + 丨 : Frankenstein's monster made an effort to photograph the Eiffel Tower, but now his negative is a big mess. In front of the tower her set up a camera on a Cartesian coordinate system as a tripod, and he attached a banana and a dinosaur bone to the camera so that he can finely tune the angles. All was for naught as he now holds the messed up negative in his hands.