a person who has authority, control, or power over others; a master, chief, or ruler.

a person who exercises authority from property rights; an owner of land, houses, etc.

a person who is a leader or has great influence in a chosen profession

the great lords of banking.

a feudal superior; the proprietor of a manor.

a titled nobleman or peer; a person whose ordinary appellation contains by courtesy the title Lord or some higher title.

Lords, the Lords Spiritual and Lords Temporal comprising the House of Lords.

( initial capital letter ) (in Britain)

the title of certain high officials (used with some other title, name, or the like)

Lord Mayor of London.

the formally polite title of a bishop

Lord Bishop of Durham.

the title informally substituted for marquis, earl, viscount, etc., as in the use of Lord Kitchener for Earl Kitchener.

( initial capital letter ) the Supreme Being; God; Jehovah.

( initial capital letter ) the Savior, Jesus Christ.

Astrology . a planet having dominating influence.

( often initial capital letter ) (used in exclamatory phrases to express surprise, elation, etc.)

Lord, what a beautiful day!

lord it

to assume airs of importance and authority; behave arrogantly or dictatorially; domineer

to lord it over the menial workers.

noun

aristocrat , baron , bishop , captain , commandant , commander , count , dad , don , duke , earl , governor , king , leader , liege , magnate , man upstairs , marquis , monarch , nobility , noble , nobleman , old man , overlord , parliamentarian , patrician , peer , potentate , prince , royalty , ruler , seigneur , sovereign , superior , viscount , grandee , landowner , magnifico , master , suzerain