excellency

excellency
(pl. -ies)

(His, Your, etc. Excellency)a title given to certain high officials of state, especially ambassadors, or of the Roman Catholic Church, or used in addressing them
阁下
His Excellency the Indian Consul General.
印度总领事阁下。
(archaic)an outstanding feature or quality
(古)优点；美德

语源

Middle English (in the sense 'excellence'): from Latin excellentia, from excellere 'surpass' (see excel). The use of the word as a title dates from the mid 16th cent