Phrases. a wolf in a lamb's skin, in sheep's clothing, etc.: a person who conceals malicious intentions under an appearance of gentleness or…

One acting a part. Obsolete. rare.

One who seems, or makes a pretence or show.

A conceited person, a pretender to wit, wisdom, or accomplishments; a coxcomb, ‘prig’. Obsolete.

British colloquial (derogatory). mutton dressed as lamb and variants: an ageing woman who is dressed or made up as if much younger. Also in…

A person who is habitually or deliberately amusing or entertaining. Also in ironic use.

A sly, shifty person who assumes an open and good-natured manner.