troop·er 
(trpər)
(trpər)n.
1.
a. A member of a unit of cavalry.
b. A cavalry horse.
2.
a. A mounted police officer.
b. A state police officer.
3. also trouper A reliable, uncomplaining, often hard-working person.
- Indo-European root: slēg-
- Indo-European root: smei-
- Indo-European root: (s)mer-
- Indo-European root: (s)mer-
- Indo-European root: sneigwh-
- Indo-European root: (s)neəu-
- Indo-European root: snā-
- Indo-European root: (s)nāu-
- Indo-European root: (s)nē-
- Indo-European root: so-
- Indo-European root: sol-
- Indo-European root: spek-
- Indo-European root: (s)pen-
- Indo-European root: spend-
- Indo-European root: sper-
- Indo-European root: sperə-
- Indo-European root: spē-
- Indo-European root: sreu-
- Indo-European root: (s)teg-
- Indo-European root: stegh-
- Indo-European root: steig-
- Indo-European root: steigh-
- Indo-European root: stel-
- Indo-European root: (s)tenə-
- Indo-European root: ster-