תְּבוּנָה, understanding. Ber. 17ᵃ לבך יהגה ת׳ may thy heart reason with understanding. Ib. 19ᵇ אין חכמה ואין ת׳ וכ׳ ‘there is no wisdom, or understanding, or counsel against the Lord’ (Prov. XXI, 30), i.e. worldly considerations may have no weight when the law of God is to be observed; Erub. 63ᵃ; a. e.