WHOLE CHARACTER
诉sù
to tell; to pour out (告诉, 倾诉); to sue; to appeal (诉讼, 上诉)
诉 is to tell out — what 告诉 says, or what a lawsuit claims.
The header says 左形右声 without naming pieces; the speech radical is clear, and the right piece 斥 is the historical sound side, shown without a modern sound rule.
MEANING (THE SPEECH RADICAL)
讠yán
speech (from 言)
The simplified speech form; not a standalone page.
In 诉: meaning (the speech radical) Shown with its documented or clearly limited role.
SOUND
斥chì
to rebuke; to reject
Standalone meaning is kept separate from its historical sound role in 诉; chì and sù share tone 4 only.
In 诉: sound The right piece, the historical sound side; chì and sù share tone 4 only.