| four-speed gear | Viergangnabe |
| four-spindle | vierspindelig |
| four-spindle automatic | Vierspindelautomat |
| four-spindle bar auto | Vierspindelstangenautomat |
| four-spindle bar automatic | Vierspindelstangenautomat |
| four-spindle chucking auto | Vierspindelfutterautomat |
| four-spindle chucking automatic | Vierspindelfutterautomat |
| four-spoke | vierspeichig |
| four-spoke steering wheel | Vierspeichenlenkrad |
| four-spot bush cricket | Vierpunktige Sichelschrecke |
| four-spot bush-cricket | Vierpunktige Sichelschrecke |
| four-spot butterflyfish | Vierflecken-Falterfisch |
| Four-spotted Chaser | Vierfleck |
| four-spotted mining bee | Frühe Dolden-Sandbiene |
| four-spotted mining-bee | Frühe Dolden-Sandbiene |
| four-spotted moth | Ackerwinden-Trauereule |
| four-square theorem | Vier-Quadrate-Satz |
| four-stage missile | Vierstufenrakete |
| four-stage missiles | Vierstufenraketen |
| four-stage rocket | Vierstufenrakete |
| four-stage rockets | Vierstufenraketen |
| four-star | Super |
| four-star freezer | Vier-Sterne-Gefrierfach |
| four-star freezer compartment | Vier-Sterne-Gefrierfach |
| four-star freezer section | Vier-Sterne-Gefrierfach |
| four-star freezing compartment | Vier-Sterne-Gefrierfach |
| four-star hotel | Viersternehotel |
| four-star hotels | Vier-Sterne-Hotels |
| Four-star petrol | Super |
| four-star restaurant | Viersternerestaurant |
| four-step | vierstufig |
| four-step process | Vierstufenverfahren |
| four-step pulley | Vierstufenscheibe |
| four-storey | viergeschossig |
| four-storey ... | viergeschossige ... |
| four-storeyed | vierstöckig |
| four-storied | vierstöckig |
| four-story | viergeschoßig |
| four-story ... | viergeschossige ... |
| four-strand rope | Vierlitzenseil |
| four-stripe damsel | Vierbinden-Preußenfisch |
| four-stripe damsels | Vierbinden-Preußenfische |
| four-stroke | viertakt |
| Four-stroke cycle | Viertaktmotor |
| four-stroke cycles | Viertakte |
| four-stroke engine | Viertaktmotor |
| four-stroke engines | Viertaktmotoren |
| four-stroke process | Viertaktverfahren |
| four-stroker | Viertakter |
| four-syllable | viersilbig |
| four-syllable ... | viersilbige ... |
| four-tailed bandage | Schleuder |
| four-tailed bandage for chin | Kinnschleuder |
| four-tailed bandage for nose | Nasenschleuder |
| four-tailed bandage for occiput | Hinterhauptschleuder |
| four-tailed bandage for vertex | Kopfschleuder |
| four-terminal equation | Vierpolgleichung |
| four-terminal network | Vierpol |
| four-thousander | Viertausender |
| four-time | viermalig |
| four-time murderer | vierfacher Mörder |
| four-to-two-wire | Gabelschaltung |
| four-toed elephant shrew | Rüsselratte |
| four-toed hedgehog | Afrikanischer Zwerg-Igel |
| Four-toed salamander | Vierzehensalamander |
| four-tooth nerite | Tattoo-Rennschnecke |
| four-track | vierspurig |
| four-track tape deck | Vierspurbandgerät |
| four-up format size | Vier-Seiten-Format |
| four-up recorder | Vier-Seiten-Recorder |
| four-valued | vierwertig |
| four-velocity | Vierergeschwindigkeit |
| four-vertex theorem | Vierscheitelsatz |
| four-way | Vierwege ... |
| four-way box | Vierwegsystem |
| four-way deal | Vierer |
| four-way directional valve | Vierwegeventil |
| four-way entry pallet | Vierwegpalette |
| four-way pallet | Vierwege-Palette |
| four-way pallets | Vierwege-Paletten |
| four-way stop | Kreuzung vierer gleichrangiger Straßen |
| four-way system | Vierwegebox |
| four-way system, four-way box | Vierwegsystem |
| four-way valve | Vierwegeventil |
| four-way valves | Vierwegeventile |
| four-way wheel wrench | Kreuzschlüssel |
