title has 10 distinct synonyms spread across 8 of its 12 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.
a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with
“Title 8 provided federal help for schools”
a general or descriptive heading for a section of a written work
“the novel had chapter titles”
the status of being a champion
“he held the title for two years”
a legal document signed and sealed and delivered to effect a transfer of property and to show the legal right to possess it
“he signed the deed”
an identifying appellation signifying status or function: e.g. `Mr.' or `General'
“the professor didn't like his friends to use his formal title”
an established or recognized right
“a strong legal claim to the property”
(usually plural) written material introduced into a movie or TV show to give credits or represent dialogue or explain an action
“the titles go by faster than I can read”
an appellation signifying nobility
“`your majesty' is the appropriate title to use in addressing a king”
designate by an identifying term
“They styled their nation `The Confederate States'”
Synonyms, antonyms and the broader and narrower relations for title come from Princeton University’s WordNet. Full sources and licences.