Simple Definition of lieutenant
: an officer in the army, navy, or air force with a fairly low rank
: an officer in a fire or police department who has a rank below a captain
: an assistant to another, more powerful person : a person who represents and works for someone else
Full Definition of lieutenant
1 a : an official empowered to act for a higher official b : an aide or representative of another in the performance of duty : assistant
2 a (1) : first lieutenant (2) : second lieutenant b : a commissioned officer in the navy or coast guard ranking above a lieutenant junior grade and below a lieutenant commander c : a fire or police department officer ranking below a captain
Examples of lieutenant in a sentence
He was promoted to the rank of lieutenant.
She has her best lieutenants working on a proposal.
one of the mobster's most loyal lieutenants
Origin and Etymology of lieutenant
Middle English, from Anglo-French lieu tenant, from liu + tenant holding, from tenir to hold, from Latin tenēre — more at thin
First Known Use: 14th century
LIEUTENANT Defined for Kids
Seen and Heard
What made you want to look up lieutenant? Please tell us where you read or heard it (including the quote, if possible).