upon
That may be "atop".
urge, unto, upon
Nothing could be cuter than you, perched upon my scooter.
A bird perched in a tree.
No the word perched is not a noun. It is a past tense verb and also an adjective.
A four letter word starting with the letter a is able.
Lard is a four letter word for grease.
That Four-Letter Word was created in 2006.
A four letter word for 'in addition to' is also.
A four letter word for Seizures is moon
It depends on what you mean by 'four letter word'. Thea has four letters, so yes it is. It is not a swear word, so it's not that kind of 'four letter word'.