speedful

English

Etymology

From Middle English speedful, spedeful, spedful (“successful, prosperous”), equivalent to speed +‎ -ful.

Adjective

speedful (comparative more speedful, superlative most speedful)

1. (archaic) Successful; prosperous.
2. (archaic) Effectual; efficient.
3. (nonstandard) Full of speed; hasty; fast.

Synonyms

• See also Thesaurus:speedy

Antonyms

• speedless

Derived terms

• speedfulness

Related terms

• speed
• speedfully