Backlash

зазо́р

zazór

(mechanical: distance of free movement between connected parts)

люфт

ljuft

(mechanical: distance of free movement between connected parts)

мёртвый ход

mjórtvyj xod

(mechanical: distance of free movement between connected parts)

ответка

otvetka

(violent or abrupt reaction)

отпор

otpor

(violent or abrupt reaction)

реа́кция

reákcija

(violent or abrupt reaction)

свобо́дный ход

svobódnyj xod

(mechanical: distance of free movement between connected parts)