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v. Present participle of ruminate.

"In his own way, Cuendet was a craftsman; and because Maigret was thinking at the same time about the fellows in the Rue La Fayette — that was what he called ruminating — he found the man slightly old-fashioned — like this restaurant, which would soon make way for a spick-and-span self-service counter."

ruminated   

ruminated    ruminates    ruminating   

eat   

chew the cud   

rumination    rumen    ruminant   

ruminator   

muse    meditate    ponder    reflect    consider