Top: big 大, below: deficiency 亏 (Having only one 一 winding seaweed 丂 means a deficiency) (Tip: See 亏 as lower part of jaw 咢 (= two teeth 口, tongue 一, lower jaw 丂)
Mnemonic
With a big tongue and jaw, you can boast and exaggerate.
The app has many other functions, such as character selection according to difficulty, practice programs, handwriting recognition and success statistics!
