hum
verb (used without object)
to make a low, continuous, droning sound.
had hummed
-
past perfectof hum.past perfect
Used to express a completed action that took place before another specific past action occurred.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The Texas economy had hummed along for most of his tenure, the energy sector booming and the whole state flush with jobs.
From New York Times ● May 4, 2021
Others mentioned the performance of the national economy, which had hummed along until the plague arrived.
From New York Times ● Nov. 16, 2020
But their option, which had hummed all night, suddenly stopped.
From Seattle Times ● Sep. 18, 2011
When the airplane picture had hummed over the wires last week, the loudspeaker conversations were resumed with A. P.'s Picture Editor Norris A. Huse in New York acting as interlocutor and traffic director.
From Time Magazine Archive
The Jade lights had hummed low, like a dog snoring.
From "A Wish in the Dark" by Christina Soontornvat
