unusual

Anomalous is a synonym of unusual.

As adjectives the difference between unusual and anomalous

is that unusual is unlike what is expected; differing in some way from the norm while anomalous is deviating from the normal; aberrant or abnormal.

As adjectives the difference between unusual and unplanned

is that unusual is unlike what is expected; differing in some way from the norm while unplanned is unintentional; not intended.

As adjectives the difference between marvelous and unusual

is that marvelous is exciting wonder or surprise; astonishing; wonderful while unusual is unlike what is expected; differing in some way from the norm.

As adjectives the difference between standout and unusual

is that standout is exceptional; noteworthy while unusual is unlike what is expected; differing in some way from the norm.

As a noun standout

is an exceptional or noteworthy person or thing.

As adjectives the difference between sudden and unusual

is that sudden is happening quickly and with little or no warning while unusual is unlike what is expected; differing in some way from the norm.

As an adverb sudden

is suddenly.

As a noun sudden

is an unexpected occurrence; a surprise.

As adjectives the difference between unusual and utmost

is that unusual is unlike what is expected; differing in some way from the norm while utmost is situated at the most distant limit; farthest.

As a noun utmost is

maximum; greatest possible amount or quantity.

Unusual is a related term of recent.

As adjectives the difference between unusual and recent

is that unusual is unlike what is expected; differing in some way from the norm while recent is recent.

Unusual is a related term of current.

As adjectives the difference between unusual and current

is that unusual is unlike what is expected; differing in some way from the norm while current is existing or occurring at the moment.

As a noun current is

the part of a fluid that moves continuously in a certain direction.

As adjectives the difference between unusual and irrational

is that unusual is unlike what is expected; differing in some way from the norm while irrational is not rational; unfounded or nonsensical.

As a noun irrational is

a real number that can not be expressed as the quotient of two integers, an irrational number.

Unusual is a related term of disorderly.

As adjectives the difference between unusual and disorderly

is that unusual is unlike what is expected; differing in some way from the norm while disorderly is not in order; marked by disorder or disarray.