accismus

wordjournal:

noun • /ak-SIZ-muhs/ • Feigning lack of interest in something while actually desiring it.

From Greek ἀκκισμός, ‘coyness, affectation’.

Example: ‘A woman uses no figure of eloquence — her own, at most, excepted — so often as that of accismus.’ Jean Paul Richter; Levana (translation); 1889.

try using this word in a sentence without sounding erudite…