Sycophancy

Botticelli's illustration of Dante's Inferno shows insincere flatterers grovelling in excrement in the second pit of the eighth circle.[1]

Sycophancy[2] is flattery that is very obedient, or an indication of deference to another, to an excessive or servile degree. A user of sycophancy is referred to as a sycophant or a "yes-man".

Alternative phrases are often used such as:

Other Languages
dansk: Sykofant
română: Yesman
suomi: Sykofantti
svenska: Sykofant