kowtow
Kowtow is a gesture of deep reverence or submission historically performed in parts of East Asia, especially China. It involves kneeling and touching the forehead to the ground, sometimes with the hands placed on the floor or on the knees. The term Kowtow comes from the Chinese 叩头 (kòu tóu), literally "knock the head," and the English form entered during early contacts with China.
Historically, kowtow was part of formal etiquette at the imperial court and in tributary diplomacy. In some
In modern usage, kowtow is often used figuratively in English to describe extreme deference or subservience