# Synonyms for imaginary

## Synonyms for (noun) **imaginary**

**Synonyms:** complex number, complex quantity, imaginary, imaginary number

**Definition:** (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1

**Similar words:** number

**Definition:** a concept of quantity involving zero and units

**Usage:** *every number has a unique position in the sequence*

## Synonyms for (adjective) **imaginary**

**Synonyms:** notional, fanciful, imaginary

**Definition:** not based on fact; unreal

**Usage:** *the falsehood about some fanciful secret treaties- F.D.Roosevelt; a small child's imaginary friends; to create a notional world for oneself*

**Similar words:** unreal

**Definition:** lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria

**Usage:** *ghosts and other unreal entities; unreal propaganda serving as news*