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The Latin term comes from the Greek word is "ἀκκισμός", which, according to Britannica, was "supposed to be formed from Acco (Greek: Akko), the name of a foolish old woman, famous in antiquity for an affectation of this kind." (An 1806 Lexicon manuale Graeco-Latinum et Latino-Graecum agrees with this derivation. However an 1820 Lexicon Graeco-Latinum associates Acco with idle occupation, e.g., chatting with other women or looking into a mirror, hence the Greek coinages Ακκιζειν / Ακκους).
- (behaviour) Britannica cites Oliver Cromwell's refusal of the crown of England as an example of accismus.
- (behaviour) Merriam-Webster's Encyclopedia Of Literature cites the dismissal of the grapes by the fox in The Fox and the Grapes as an example 
- When receiving gifts or honours, accismus is used to demonstrate modesty: "I am not worthy of the honor."
- (ironic utterance) "I couldn't possibly accept such charity from you."
- When being offered roles, accismus is used to demonstrate modesty: "I am not worthy of the role."
- When being offered the authority as the owner of a paper clip (in an extreme case), accismus is used to demonstrate modesty: "I am not worthy of being the owner of a paper clip."
- (ironic saying) "I couldn't possibly accept such welfare nor promotion from you."
- "Accismus" in 1823 Encyclopædia Britannica
- Garner's Modern American Usage, p. 877
- Akko - nominem mulieris, quae tempestive recusare videbatur, ut deinde melius obtineret
- Ακκιςομαι - simulate recuso, os, vultumque in morem mulieris Acco compono
- Lexicon Graeco-Latinum, 1820, p. 90
- Ακκο - mulier quaedam notae stultitiae, quae solita sit ad speculum cum imagine sua, perinde atque cum alia muliere, confabulari; ut hinc vulgo, quae stultius aut ineptius aliquid agerent, Ακκιζειν dicerentur, et Ακκους nomine compellarentur. Illud etiam moribus hujus mulieris adfuit, ut recusaret quae tamen cupiebat.
- Ακκιςομαι - simulate recuso, ficte aspernor, fingo me nolle quum maxime velim. Est etiam generaliter, simulatione utor, idem quod προσποιουμαι ... Saepe de mulieribus dicitur et scortis, quae ut pluris addicant, morosiora se praestant, nec facile se exorari sinunt.
- Ακκισμός - ficta recusatio, simulatio qua quis utitur fingens se accipere nolle quod tamen vult.
- "Accismus", in Merriam-Webster's Encyclopedia Of Literature