pocketbook has 8 distinct synonyms spread across 3 of its 4 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.
your personal financial means
“that car is too expensive for my pocketbook”
a container used for carrying money and small personal items or accessories (especially by women)
“she reached into her bag and found a comb”
Synonyms, antonyms and the broader and narrower relations for pocketbook come from Princeton University’s WordNet. Full sources and licences.