commonly
adv. freq.adv. often or in many places. You use this to describe things that are normal or happen frequently for most people.
adv. frequently or in many instances; in a manner that is usual or widespread.
This type of bird is commonly seen in city parks.
The medication is commonly prescribed to treat seasonal allergies because it has very few side effects.
While the two species are distinct, they are commonly mistaken for one another by amateur observers due to their nearly identical plumage and nesting habits.
Inherited from Middle English comunly; equivalent to common + -ly.
Frequency adverb — typically placed before the main verb or after the first auxiliary verb.
Commonly people think that...People commonly think that...While 'commonly' can start a sentence, it is more natural and frequent for learners to place it before the main verb.