IPA: /ˌsʌb.luːˈtɛn.ənt/
KK: /sʌbˈluːtənənt/
A military officer who ranks just below a lieutenant, often serving in a junior position.
The sublieutenant was eager to prove his skills during the training exercises.
**Sublieutenant** → It is formed from "sub-" (meaning under) and "lieutenant" (from Old French *lieutenant*, meaning to hold or to place). The word describes a rank that is under a lieutenant, indicating a subordinate position in military hierarchy.
Think of someone who is 'under' ('sub-') a 'holder' or 'place' ('lieutenant') in the military — that's why a sublieutenant is a rank below a lieutenant.