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The suffix for tedious is -ous.
The noun forms for the adjective tedious tediousness and tedium.
The is no verb form for tedious; the adverb tediouslymodifies a verb as done in a tedious manner.
Waxing the car is a tedious task.
The word tedious has three syllables.
Because the teacher droned on and on, his students found listening to be tedious.
Answering such questions may be tedious to some people, but not to me.
The sailors found life on a cargo ship to be tedious and boring.