Definition of sidely in US English:

sidely

adverb

rare
  • By, at, or towards the side; obliquely. Formerly also: †in an indirect manner, indirectly (obsolete).

Origin

Late Middle English; earliest use found in John Wyclif (d. 1384), theologian, philosopher, and religious reformer. From side + -ly.

Pronunciation

sidely

/ˈsʌɪdli/