meaning: instruct, admonish
説諭 == setsuyu == (noun that can take する to act as a verb) persuasion, convincing
Left radical is 'words/speak'. Right radical is
a character found only in Chinese, originally meaning 'convey', here
phonetically to express 'clear/clarify'. To 'clarify with words' is to
instruct or correct.
suggests taking the right radical as 'cut' (刀), 'meat' (肉), and a
'cover', and as a
mnemonic: 'Admonish verbally and instruct to cover cut meat.'