clear
瞭 centers on visual clarity: something seen clearly and distinctly, without obstruction or confusion.
瞭 combines 目 (eye) with 尞, which likely contributes the sound and may relate to brightness or clarity. The exact historical development of 尞 is uncertain.
The eye 目 sees the bright, clear 尞 component: everything is visually distinct and easy to understand.
For リョウ, imagine looking through a clear lens and seeing a bright, clear view: lens -> リョウ, and your eye 目 sees everything clearly.
clear; plain; distinct; obvious; evident; articulate
unclear; indistinct; obscure; opaque; inarticulate; dim; blurred
obvious; (as) clear as day; plain to see
intelligibility; clarity; clearness
obvious; evident; clear
simple and clear
clear and concise