doubtful etymology

English word doubtful comes from English doubt, English -ful

Detailed word origin of doubtful

Dictionary entryLanguageDefinition
doubt English (eng) (ambitransitive) To lack confidence in; to disbelieve, question, or suspect.. (archaic) To fear; to suspect.. (obsolete) To fear; to be apprehensive of.. (obsolete) To fill with fear; to affright. Uncertainty, disbelief.
-ful English (eng) Used to form adjectives from nouns. Full of, tending to, or thoroughly possessing the quality expressed by the noun.. Used to form nouns from nouns meaning “as much as can be held by what is denoted by the noun”. Used to form nouns indicating a great deal of the quantity expressed by the noun.
doubtful English (eng) A doubtful person or thing. (obsolete) Fearsome, dreadful.. Experiencing or showing doubt, sceptical.. Improbable or unlikely.. Subject to, or causing doubt.. Suspicious, or of dubious character.. Unclear or unreliable.. Undecided or of uncertain outcome.

Words with the same origin as doubtful

Descendants of -ful
colorful delightful disgraceful graceful grateful hateful helpful hopeful hurtful joyful meaningful merciful painful peaceful resourceful respectful rightful stressful successful suspenseful thankful truthful useful youthful