The verb is from side + -le (frequentative suffix), possibly a back-formation from sideling (“in a sidelong direction; askew, obliquely”, adverb), treating that word as the present participle of sidle.
The noun is derived from the verb.
- (Received Pronunciation) IPA(key): /ˈsaɪdl/
- (General American) enPR: sīd-(ə)l, IPA(key): /ˈsaɪdəl/
- Rhymes: -aɪd(ə)l
- Hyphenation: sid‧le
sidle (plural sidles)
- (transitive, intransitive, also figuratively) To (cause something to) move sideways. [from late 17th c.]
- (transitive, intransitive, also figuratively) In the intransitive sense often followed by up: to (cause something to) advance in a coy, furtive, or unobtrusive manner.
- 1960, P[elham] G[renville] Wodehouse, chapter VIII, in Jeeves in the Offing, London: Herbert Jenkins, OCLC 1227855:
- At an early point in these exchanges I had started to sidle to the door, and I now sidled through it, rather like a diffident crab on some sandy beach trying to avoid the attentions of a child with a spade.
- sidling (noun)