a. Perhaps a misprint for EFFROYABLE, which Harvey elsewhere uses. The Dicts. have effraiable with this example.
1665. G. Harvey, Advice agst. Plague, 5. Pestilential symptoms declare nothing a proportionate efficient of their effrajable and miscreant nature.
1755. Johnson, Effraiable.
So 1775 in Ash.
17821800. in Bailey; and in mod. Dicts.