ultrafast

Fetched 2026-10-26 (cache).

Synonyms: ultraist

Antonyms: ultraist

Related words from Datamuse; suggestions, not definitions.

Adjective

1. Very [[fast]], or of very short [[duration]]; especially concerning events that take place in [[femtosecond]] or [[picosecond]] [[timescale]]s.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.