Adjective

(en adjective)

Subject to, or causing doubt

or showing doubt, sceptical

Undecided or of uncertain outcome

(obsolete) Fearsome, dreadful.

*, Bk.XIV, Ch.vii:

*:‘With whom,’ seyde Sir Percivale, ‘shall I fyght?’ ‘With the moste douteful champion of the worlde.’

Improbable or unlikely

Suspicious, or of dubious character

Unclear or unreliable

*{{quote-book, year=1922, author=E.R. Eddison, title=The Worm Ouroboros

, passage=The pupils of her great eyes were large in the doubtful lamplight, swallowing their green fires in deep pools of mystery and darkness.}}