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slacken

How to pronounce slacken:

Definition of slacken:

slacken:
The past tense of Slacken is slackened.

Synonyms for slacken:

slack
slow down
slow up
weaken

Antonyms for slacken:

brace
contract
firm up
flex
increase
knot
pull tight
screw up
stiffen
straighten
strain
stretch
tauten
tense
tense up
tension
tighten
tighten up
Other 2-syllable words

Here are some other common 2-syllable words.

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Syllable Fun Fact
The Guinness World Record for the longest word by syllables is the chemical name for the protein nicknamed 'titin', with 189,819 letters and thousands of syllables.

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