Sycophancy

[Sarah]

The character or characteristic of a sycophant. Hence: -(a) False accusation; calumniation; talebearing. [Obs.] Bp. Hall.(b) Obsequious flattery; servility.The sycophancy of A.Philips had prejudiced Mr. Addison against Pope.Bp. Warburton.

[Sarah]

Sycophancy is [self-serving] or [servile] flattery. It probably derives from the Latin sȳcophantia, meaning trickery, and consists of the fawning behaviour of useless [two-faced] self-seeking [toe rag] who attempts to win favour by flattering and [pandering] to the boss. A person who does this is known as a [sycophant] or more informally as [ass-kisser], [crawler], [toady], [lackey], [apple polisher], [boot licker], fawner, groveler, groveller, or truckler.

[Sarah]

Adulation

Cringing

Making [popcorn]

[PussyCat]

behaviour in which someone praises powerful or rich people in a way that is not sincere, usually in order to get some advantage from them:

[Justin Bieber]

Obsequious behavior toward someone important in order to gain advantage.