וַיְחַזֵּ֥ק יְהוָ֖ה אֶת־לֵ֣ב פַּרְעֹ֑ה וְלֹ֥א אָבָ֖ה לְשַׁלְּחָֽם׃
Mais l’Éternel endurcit le cœur de Pharaon, qui ne consentit point à les laisser partir.
Ibn Ezra
needy [Hebrew: evyon] Some say that the word is related to “he did not want [Hebrew: avah] to let them go” [Exodus 10: 27] (thereby attributing to it the same form as is shown by the Hebrew words “lofty [Hebrew: elyon]”, “hideaway [Hebrew: ḥevyon]”, and “logic [Hebrew: higgayon]”, whose triliteral roots are -l-h, ḥ-v-h, and h-g-h, respectively), denoting one who is in want of everything, due to his great need.
Rav Hirsch
V. 26. אבה .ולא אביתם וגו׳ ותמרו: sich dem Willen eines andern fügen (siehe Schmot 10, 27 und Dewarim 18, 8 u. f.). מרה: dem Willen eines andern entgegen sein (siehe Bereschit 26, 35). המרה: jemandem zuwider handeln.