aigrefin, n.m., sharper.
aigrelet, -te, adj., sourish, tartish.
aigrement, adv., acrimoniously, sourly, sharply, bitterly, roughly, harshly.
aigremoine, n.f., (bot.) agrimony, liverwort.
aigremore, n.m., aigremore.
aigret, -te, adj., sourish, tartish.
aigrette n.f., egret, aigret; aigrette, tuft, or plume (of feathers, diamonds); (bot.) egret, (milit.) tuft; horn (of the owl); crest (of the peacock).
aigretté, -e, adj., with an egret, tufted, crested.
aigreur, n.f., sourness, sharpness, tartness, harshness, bitterness; surliness; ill-nature, grudge, spite; pl., (med.) acidity of stomach, heartburn, water-brash; (engrav.) harsh strokes, hatches made too hard.
aigrir, v.a., to make sour or sharp, to sour, to turn sour; to irritate, to embitter, to make worse; to incense, to provoke; to make ill-humored. Sa disgrâce lui a aigri l’esprit; his disgrace has soured his temper.