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Related to rattle off: by all means, sure enough, somehow or other
rattle (something) off
To say or recite something very quickly, without much thought or consideration. This guy doesn't know what he's talking about; he's just rattling off a bunch of industry buzz words. The accountant rattled the numbers off to me, but I couldn't tell you what they all meant.
rattle something offand reel something off
to recite something quickly and accurately. She can really reel song lyrics off. Listen to Mary rattle off those numbers.
Also, reel off. Utter or perform rapidly or effortlessly, often at length. For example, The treasurer rattled off the list of all those who had not paid their dues, or She reeled off song after song. The verb rattle has been used for fast talking since the late 1300s and for other kinds of fast production since the late 1800s (George Bernard Shaw wrote of "men who rattle off their copy" in a letter of 1896). The verb reel off, which alludes to unwinding from a reel, has been used figuratively since about 1830.
To recite something rapidly and easily; reel something off: She rattled off the names of people who had recently applied for the job opening. He knows every state capital and can easily rattle them off if you ask him to.