Isan เสิก

← Ahom 𑜏𑜢𑜤𑜀𑜫 (cognate)

← Lü ᦵᦉᦲᧅ (cognate)

← Lü ᦉᦹᧅ (cognate)

← Khmer សឹក (cognate)

← Lao ເສິກ (cognate)

← Old Khmer *សិក (borrowed)

← Northern Thai ᩈᩮᩥᩢ᩠ᨠ (cognate)

← Shan သိုၵ်း (cognate)

← Proto-Southwestern Tai *sɤkᴰ (inherited)

← Thai ศึก (cognate)

← Thai สึก (cognate)

→ Thai ศึก (cognate)

→ Thai สึก (cognate)