Webster’s Revised Unabridged Dictionary · 1913
Forfend
For·fend′ (fŏr·fĕnd′), v. t. [Pref. for- + fend. See Forewend.] To prohibit; to forbid; to avert. [Archaic]
Which peril heaven forefend! Shak.
☞ This is etymologically the preferable spelling.
Webster’s Revised Unabridged Dictionary · 1913
For·fend′ (fŏr·fĕnd′), v. t. [Pref. for- + fend. See Forewend.] To prohibit; to forbid; to avert. [Archaic]
Which peril heaven forefend! Shak.
☞ This is etymologically the preferable spelling.