grievously

UK
/ˈɡriːvəsli/
US
/ˈɡrivəsli/

Examples

To question his ardour is to insult him as grievously as if one questioned the honour of the republic or the chastity of his wife.

Mettre en doute son ardeur, c'est l'insulter aussi gravement que si l'on mettait en doute l'honneur de la république ou la chasteté de sa femme.