Aceo, Acere, Acui

(To Be Sour)

Acer

(Sharp, Keen)

Acuo, Acuere, Acui, Acutum

(To Sharpen)

Acus, Acus, F.

Needle, Arrowhead, Dagger

Aedis, Aedis, F.

(Temple)

Aemulus, Aemuli (Rival)

or

Aemulus (emulating)

Aequus, Aequa, Aequum

(Equal)

Aes, Aeris, N.

(Bronze)

Aestimo, Aestimare, Aestimavi, Aestimatum

(To Value)

Aestus, Aestus, M.

(Heat, Fire, Tide)

Aevum, Aevi, N.

(Age)

Ager, Agri, M.

(Field)

Agger

(Mound, Heap)

Ago, Agere, Egi, Actum

(To Do, Drive)

Aio (defective)

To Say

Ala, Alae, F.

(Wing)

Albus, Alba, Album

(White)

Aliquis

(Something)

Alo, Alere, Alui, Alitum

(To Nourish)

Alter

(Other)

Altus, Alta, Altum

(High, Deep)

Aqua, Aquae, F.

(Water)

Amarus, Amara, Amarum

(Bitter)

Ambulo, Ambulare, Ambulavi, Ambulatum

(To Walk)

Amo, Amare, Amavi, Amatum

(To Love)

Amoenus, Amoena, Amoenum

 (Pleasant)

Ante

(Before)

Aperio, Aperire, Aperui, Apertum

(To Open)

Appello, Appellare, Appellavi, Appellatum

(To Call by Name, To Entreat)

Aptus, Apta, Aptum

(Suitable, Proper)

Vacillo, Vacillare, Vacillavi, Vacillatum

(To Hesitate)

Vacillate, Vacillation

Vaco, Vacare, Vacavi, Vacatum

(To Be Empty)

Vado, Vadere, Vasi

(To Go, Walk, Rush)

Vagina, Vaginae, F.

(Sheath)

Vagus, Vaga, Vagum

(Wandering)

Valeo, Valere, Valui, Valitum (?)

(To Be Worth, To Be Healthy)

Vallis, Vallis, F.

(Valley)

Vallum, Valli, N.

(Wall, Rampart)

Valvae, F.

(Folding or Double Doors)

Vannus, Vanni, M.

(Winnowing Basket)

Vanus, Vana, Vanum

(Boastful, Deceptive, or Empty)

Vapidus, Vapida, Vapidum

(Flat, Spiritless)

Vapor, Vaporis, M.

(Smoke, Steam, Warmth)

Varius, Varia, Varium

(Diverse)

Varus, Vara, Varum

(Bent Outwards, Bowlegged)

Vas, Vasis (gender?)

Vessel 

Vegeo (where the hell are the principal parts?)

To Move

Veho, Vehere, Vexi, Vectum

(To Carry)

Vello, Vellere, Velli, Vulsum

(To Pull, Tear Out)

Velum, Veli, N.

(Curtain, Veil, Sail)

Vena, Venae, F.

(Vein, Blood Vessel, Disposition)

Venio, Venire, Veni, Ventum

(To Come)

Venor, Venari, Venatus sum

Venter, Ventris, M.

(Stomach, Womb)

Venus, Veneris, F.

(Roman goddess of love)

Venum

(Something for Sale)

Ver, Veris, N.

(Spring)

Verber, Verberis, N.

(Whip, Rod)

Veredus, Veredi, N.

(A Courier's Horse)

Vereor, Vereri, Veritus Sum

(To Fear, Respect)

Vergo

(To Bend, Verge, Incline)

Vermis, Vermis, M.

(Worm)

Verna, Vernae, M.

(A Slave Born in Master's Home)

Verto, Vertere, Verti, Versum

(To Turn)

Verus, Vera, Verum

(True)

Vesper, Vesperis, M.

or 

Vesper, Vesperi, M.

Evening

Vestigo, Vestigare, Vestigavi, Vestigatum

(To Search, Track)

Vestis, Vestis, F.

(Garment, Clothing)

Vetus, Vetus, Vetus

(Old)

Vexo, Vexare, Vexavi, Vexatum

(To Shake, Harass)

Via, Viae, F.

(Road)

Vibro, Vibrare, Vibravi, Vibratum

(To Threaten, Tremble)

Vicis, F.

(Alternation, Change, Turn)

Vicus, Vici, M

(Hamlet)

Video, Videre, Vidi, Visum

(To See)

Vigeo, Vigere, Vigui, Vigitum

(To Thrive, Flourish)

See Vigil

Vigil, Vigilis, M.

(Watchman)

Vilis, Vilis, Vile

(Cheap, Base)

Villus

(Shaggy Hair)

Vinco, Vincere, Vici, Victum

(To Conquer)

Vindex, Vindicis, M.

( Defender, Claimant, Vindicator)

Vir, Viri, M.

Man

Vireo, Virere, Virui

(To Be Green, Sprout, Flourish)

Virga, Virgae, F.

Twig

Virus, Viri, N.

(Poison)

Vis, Vis, F.

(Force)

Uber, Uberis, N.

(Breast, Fruitfulness)

Ulcus, Ulceris, N.

(Wound, Sore)

Umbra, Umbrae, F.

(Shadow)

Uncia, Unciae, F.

(A Twelfth, a little bit)

Unda, Undae, F. 

(Wave)

Ungo, Ungere, Unxi, Unctum

(To Anoint)

Unus, Una, Unum

(One)

Upupa, Upupae, F.

(Hoopoe)

Urgeo, Urgere, Ursi, X

(To Push, Press)

Uro, Urere, Ussi, Ustum

(To Burn, Consume, Inflame)

Utor, Uti, Usus Sum

(To Use)

Taberna, Tabernae, F.

(Shop, Inn)

Arceo, Arcere, Arcui, Arcitum

(To Shut, Enclose, Confine)

Arcus, Arcus, M.

(Arc, Bow)

Arma, Armorum, N.

(Weapons)

Armo, Armare, Armavi, Armatum

(To Arm)

Aro, Arare, Aravi, Aratum

(To Cultivate)

Ars, Artis, F.

(Art)

Artus, Arta, Artum

(Narrow, Close)

As, Assis, M.

(Roman coin of least value)

Asinus, Asini, M.

(Donkey)

Asper

(Rough)

Astus, Asti, M.

(Craft, Cunning)

Audeo, Audere, Ausus Sum

(To Dare)

Audio, Audire, Audivi, Auditum

(To Hear)

Augeo, Augere, Auxi, Auctum

(To Increase)

Augur

Auris, Auris, F. 

(Ear)

Aurum, Auri, N.

(Gold)

Ausculto, Auscultare, Auscultavi, Auscultatum

(To Listen)

Aveo, Avere

(To Desire, To Hail)

Avis, Avis, F.

(Bird)

Avus, Avi, M.

(Grandfather)

Baca, Bacae, F.

(Berry, Pearl)

Baculum, Baculi, N.

(Rod, Staff)

Badius, Badia, Badium

(Chestnut Colored)

Baiulus, Baiuli, M.

(Porter, Steward, Bailiff)

Balteus, Baltei, M.

(Belt)

Barba, Barbae, F.

(Beard)

Battuo, Battuere, Battui

(To Hit)

Bellum, Belli, N.

(War)

Beo, Beare, Beavi, Beatum

(To Bless, To Make Happy)

Bibo, Bibere, Bibi

(To Drink)

Bis

(Twice)

Bonus, Bona, Bonum

(Good)

Bos, Bovis, M or F

(Cow)

Botulus, Botuli, M.

(Sausage, Black Pudding)

Braca, Bracae, F.

(Pants)

Bractea, Bracteae, F.

(Gold Leaf, Veneer)

Brevis, Brevis, Breve

(Short)

Bulla, Bullae, F.

(Amulet Thing)

Caballus, Caballi, M.

(Horse)

Cado, Cadere, Cecidi, Casum

(To Fall)

Caedo, Caedere, Cecidi, Caesus

(To Cut, Kill)

Caelebs, Caelebs, Caelibis

(Single)

Caelum, Caeli, N.

(Sky)

Caleo, Calere, Calui

(To Be Warm)

Calo

(To Announce)

Calvor

(To Deceive)

Calvus, Calva, Calvum

(Bald, Hairless)

Calx, Calcis, F.

(Heel)

Calx, Calcis, F.

(Small Stone)

Cambio, Cambire, Campsi

(To Exchange, Barter)

Campus, Campi, M. 

(Field)

Cancelli

(Barriers, Lattices)

Cancer, Cancri, M.

(Crab, Tumor)

Candeo, Candere, Candui

(To Shine, Glow)

Canis, Canis, M. or F.

(Dog)

Cano, Canere, Cecini, Cantum

(To Sing)

Caper, Capri, M.

(Goat)

Capillus, Capilli, M

(Hair)

Capio, Capere, Cepi, Captum

(To Take)

Capsa, Capsae, F. 

(Box)

This also derives from Capio

Caput, Capitis, N.

(Head)

Carbo, Carbonis, M.

(Coal)

Cardo, Cardinis, M.

(Hinge)