Similar words: thwart, pathway, lengthways, cut both ways, wacky, mouth-watering, draw a conclusion, backtrack. Meaning: [θwæk] 
n. a hard blow with a flat object. v. deliver a hard blow to.
n. a hard blow with a flat object. v. deliver a hard blow to. 
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(1) I listened to the thwack of the metal balls.
(2) Then the woodcutter let his axe fly— Thwack! Everyone heard it.
(3) I heard the thwack of the whip against the horse's side. Sentencedict.com
(4) Rely more on the thwack than the look.
(5) The customary thwack on the bottom is still the best method for determining doneness.
(6) Thwack the bottom but be careful not to get hot melted chocolate on your finger.
(7) He hit the flaring log such a hefty thwack that it broke in two.
(8) From the next room came the thwack of darts and a louder hubbub of voices.
(9) Fans are holding their breath and awaiting the thwack that will determine the victor.
(10) With one big thwack, they were reminded that stocks are risky and that emerging markets are riskier.
(11) So this thwack is hardly the kiss of death for Goldman or even major damage to its business model.
(12) I slide downhill, thwack into the tree that marks the boundary of the next plot.
(13) The cop carried a stick, ready to thwack anybody who offended his ear or eye.
(14) Somebody had procured an aluminum bat, and the traditional thwack surrendered to a whistling hum.
(15) Another shot blasted through the already-shattered window and into the cargo area. This time Jack heard a meaty thwack, a cry of surprise.
More similar words: thwart, pathway, lengthways, cut both ways, wacky, mouth-watering, draw a conclusion, backtrack, backpack, each way, highway, forthwith, southwest, northwest, earthworm, worthwhile, lengthwise, worth while, back to back, back-to-back, fresh water, lech walesa, freshwater, trench warfare, every which way, search warrant, ACK, tack, jack, hack.