adj, adv ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Alternative spelling of sicker (“certain”). alt-of, alternative
2. 2
   Alternative spelling of sicker (“secure”). alt-of, alternative

Adverb

1. 1
   Alternative spelling of sicker (“certainly”). alt-of, alternative
2. 2
   Alternative spelling of sicker (“securely”). alt-of, alternative

Synonyms

All synonyms

assuredassuredcertainconfirmeddestinedsure

Etymology

From Middle English siker (“secure, safe, stable, certain; securely, safely, certainly”), from Old English sicer. For more, see sicker.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.