c1400 (c1378) W. Langland (Laud 581) (1869) B. xiii. 43 (MED) Þei ete mete of more coste..Ac her sauce was ouer-soure & vnsauourely grounde, In a morter, post-mortem of many bitter peyne.
1999 R. Nichols tr. H. Halbreich xvii. 587 When my over-sour reasoning seems to you to go too far.