Some adverbs with four syllables are:
When, where, why, and how.
There are four syllables in the word "usually".
four syllables.
com-fort-ab-le has four syllables.
The word "complication" has four syllables: com-pli-ca-tion.
automatic and activity.
Usually it has three syllables (deu-xiem-ment), but in poetry (if needed) or in some part of France (provence) there would be four syllables (deu-xiè-me-ment)
When, where, why, and how.
Liberated has four syllables. The syllables are li-ber-a-ted.
The four syllables of meridian are: Me-rid-i-an.
Psychology has four syllables.
Pedestrian has four syllables.
There are four syllables. Hil-a-ri-ous.
There are four syllables in the word "usually".
The word metropolis has four syllables. The syllables are me-tro-po-lis.
there are four syllables in the word associates.
li-brar-i-an has four syllables.