Definition of faux-naïf in US English:

faux-naïf

adjective

  • (of a work of art or a person) artificially or affectedly simple or naive.

    ‘faux-naif pastoralism’
    • ‘There are faux naif drawings on the blackboard behind each man: a balloon, a bike, the figures 200 plus 200 equals 400.’
    • ‘A (perhaps the) central question, which divides modern readers into two camps, is how far style and content are really faux-naif and informed by humour and irony.’
    • ‘Nor does it seem right to call this work faux-naif, as though he is exploiting the look of outsider art for its ‘authentic’ effects.’
    • ‘Yet there is a faux naif pose, a lifelong defence against the perplexing realities of the outside world.’
    • ‘The show featured the small, richly colored, faux-naif paintings on paper that the playwright completed between 1946 and 1956.’
    • ‘The author doesn't present himself as something he is not: he does not exaggerate his knowledge of the country and he also steers clear of the irritating faux-naif persona favoured by some travel writers.’
    • ‘That exhibition was titled ‘Modern Love’ and was heavy on faux-naif paintings.’

noun

faux naif
  • A person who pretends to be ingenuous.

    ‘the old device of a faux naif observing his own country as a foreigner’

Origin

From French faux ‘false’ + naïf ‘naive’.

Pronunciation

faux-naïf

/ˌfōnäˈēf/