clickety-clack

[klik-i-tee-klak]

noun

a rhythmic, swiftly paced succession of alternating clicks and clacks, as the sound produced by the wheels of a train moving over tracks.

Origin of clickety-clack

First recorded in 1875–80; metrical compound from click¹, clack

Also called click·e·ty-click

[klik-i-tee-klik] /ˈklɪk ɪ tiˈklɪk/.

I was plunged on the first day—not into “clickety-clack,” but “slippety-slip.”
Life's Minor Collisions
Frances Warner