80

tighten, tightened, tightened

Base form	Past Simple	Past Participle
tighten	tightened	tightened

-ing form

tightening

hear the pronunciation of 'tightening'

s

tightens

hear the pronunciation of 'tightens'

Verbs that end with "-ten"

fasten
frighten
lighten
listen
threaten
tighten

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