Instantly there was a dull "whump," more felt in one's tissues than heard aloud.    From Wordnik.com.  [The Runaway Asteroid] Reference

I grabbed onto the column, as usual and then whump!.    From Wordnik.com.  [Sweetnicks- Food & Life - It's All at Sweetnicks] Reference

There was a whump as something smashed into her table.    From Wordnik.com.  [An Ill Fate Marshalling]

Then a new noise intruded: a deep, sonorous whump-whump.    From Wordnik.com.  [Ice Hunt]

The brakes screeched, then let out a loud, gaseous whump.    From Wordnik.com.  [Black Friday]

She dropped like a sack of grain pushed out of the loft-whump.    From Wordnik.com.  [The Pillars of Creation]

He heard the whump of a great weight hitting ground behind him.    From Wordnik.com.  [An Ill Fate Marshalling]

Then, out of the darkness, came the whump-whump of a helicopter.    From Wordnik.com.  [Bryan Burrough: This Reporter Gets to Play One Onscreen: Bryan Burrough] Reference

So it is correct, as in "whump my shoe-in t'your flabby behind!".    From Wordnik.com.  [Johnson, Benn and Harman Shine on Question Time] Reference

He went sailing through the air and landed with a bone-jarring whump!.    From Wordnik.com.  [The Irda]

They each vanish with a whump, splattering blood on their classmates.    From Wordnik.com.  [Reduce your carbon footprint or get ready to explode] Reference

Then a loud whump seemed to bounce from the walls in the room below her.    From Wordnik.com.  [In the Presence of the Enemy]

Harvey heard the sharp whump! which he recognized from Vietnam: mortars.    From Wordnik.com.  [Lucifer's Hammer]

Or was that his own heart beating … thaw-whump, thaw-whump, thaw-whump …?.    From Wordnik.com.  [Heart's Desire, a short story] Reference

Sure enough, a few minutes later the ground rumbled beneath us with a deep whump!.    From Wordnik.com.  [Explosive critique sessions] Reference

With a loud whump! immense jaws slammed shut as the pit bull-bull snapped downward.    From Wordnik.com.  [The Lives of Felix Gunderson] Reference

He heard a soft whump behind him, and a sudden orange glow came from beneath the Jeep.    From Wordnik.com.  [Mortal Remains]

Canvas fell taut with a whump; the old craft shouldered on starboard tack across the bay.    From Wordnik.com.  [Stormwarden]

He climbed onto the stage and tapped the microphone, sending a whump through the on-stage PA.    From Wordnik.com.  [Mortal Causes]

Yes that is a mushroom cloud or, dare I say, an “orgasmic whump” spreading out all over her.    From Wordnik.com.  [WAR AS SEXUAL DOMINATION » Sociological Images] Reference

They flew for a short distance and landed with a whump that knocked the breath from their bodies.    From Wordnik.com.  [The Elf Queen of Shannara]

Through Shibo's comm line he could hear the distant whurnp-whump-whump of magnetic detectors in the control vault.    From Wordnik.com.  [Tides Of Light]

He was almost to the cane when it rattled all about him and there was a heavy whump and then the echo of it from across the river.    From Wordnik.com.  [No Country For Old Men]

Edwards heard the command, then the steady whump-whump of the feet of marching men.    From Wordnik.com.  [Uncle Sam's Boys in the Philippines or, Following the Flag against the Moros] Reference

He could be a combo receiver-tight end to replace Tony Scheffler, and that size - whump.    From Wordnik.com.  [Denver Post: News: Breaking: Local] Reference

Maybe we don’t need a candidate as smart and cute as Lamont to whump this tool.    From Wordnik.com.  [Firedoglake » Lieberman Distorts His Record] Reference

The lady, she's our cap'tain'she orders us to whump you, warns us that you pretty good. ".    From Wordnik.com.  [Emperor of Ansalon]

The ugly whump! of metal hitting metal.    From Wordnik.com.  [Time Was]

A moment later, they heard a soft whump.    From Wordnik.com.  [State of fear]