image has 23 distinct synonyms spread across 9 of its 11 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an iconic mental representation
“her imagination forced images upon her too awful to contemplate”
(Jungian psychology) a personal facade that one presents to the world
“a public image is as fragile as Humpty Dumpty”
a visual representation (of an object or scene or person or abstraction) produced on a surface
“they showed us the pictures of their wedding”
language used in a figurative or nonliteral sense
someone who closely resembles a famous person (especially an actor)
“he could be Gingrich's double”
(mathematics) the set of values of the dependent variable for which a function is defined
“the image of f(x) = x^2 is the set of all non-negative real numbers if the domain of the function is the set of all real numbers”
the general impression that something (a person or organization or product) presents to the public
“although her popular image was contrived it served to inspire music and pageantry”
a representation of a person (especially in the form of sculpture)
“the coin bears an effigy of Lincoln”
render visible, as by means of MRI
Synonyms, antonyms and the broader and narrower relations for image come from Princeton University’s WordNet. Full sources and licences.