[adjective] -ier, -iestHe'd coated the shelves with a thick treacly (= dark and sticky) varnish.(disapproving) Treacly is also used to mean too pleasant or kind, or expressing feelings of love in a false way.The film is spoilt by a slightly treacly sentimentality.
TREACLY
Meaning of TREACLY in English
Cambridge English vocab. Кембриджский английский словарь. 2012