Definition of footsides in English:

footsides

(also fitsides)

adverb

Scottish
rare
  • Even, equal, or quits with a person or thing. Only in "to be (or keep) footsides with".

Origin

Late 17th century. From foot [interjection] + side + -s.

Pronunciation

footsides

/ˈfʊtsʌɪdz/