siker

siker [sik-er] Examples adjective, adverb Scot. and North England.

1. sicker2.

sicker 2or sik·er [sik-er]Scot. and North England adjective

1. safe from danger; secure.
2. dependable; trustworthy.

adverb

3. certainly; without doubt.

Origin of sicker 2 before 900; Middle English siker, Old English sicor; cognate with Dutch zeker, German sicher, all ≪ Latin sēcūrus; see secure Examples from the Web for siker Historical Examples of siker

And therefore, I am siker that this may not be, without a great token.

The Travels of Sir John Mandeville

John Mandeville