List of Latin words with English derivatives

This is a list of Latin words with derivatives in the English language.

Ancient orthography did not distinguish between i and j or between u and v. Many modern works distinguish u from v but not i from j. In this article, both distinctions are shown as they are helpful when tracing the origin of English words. See also Latin phonology and orthography.

Nouns and adjectives

The citation form for nouns (the form normally shown in Latin dictionaries) is the Latin nominative singular, but that typically does not exhibit the root form from which English nouns are generally derived.

Latin nouns and adjectives
A–M
Citation form	Declining stem	Meaning	English derivatives
abdomen	abdomin-	belly	abdomen, abdominal, abdominous, intra-abdominal
accipiter	accipitr-	hawk	Accipiter, accipitrine
acer	acer-	maple	aceric
ācer	ācr-	sharp	acrid, acridine, acridity, acrimonious, acrimony, acritude, acrity, acrolein, eager, vinegar
acerbus • acerbior • acerbissimus	acerb-	bitter	acerbic, acerbity, exacerbate, exacerbation
acervus	acerv-	heap	acerval, acervate, acervation, acervative, acervose, Acervulinacea, acervuline, acervulus, coacervate, coacervation
†acervulus	acervul-
acētum	acēt-	vinegar	acetabuliform, acetabulum, acetate, acetic, acetone, aceturic, triacetate
acinus	acin-	berry	acinaceous, acinar, acinarious, aciniform, acinose, acinous, acinus, interacinous
acus	acer-	chaff	acerose
acus	acū-	needle	acicular, acuity, aculeate, aculeolate, aculeus, acumen, acuminate, acupuncture, acusector, acutance, acute, acutifoliate, acutilingual, acutilobate, aiguille, cute, eglantine, nonacuity, peracute, subacute
†acicula	acicul-
†acula	acul-
adeps	adip-	fat	adipocere, adipose
aedes, aedis	aed-	building	aedicule, aedile, cavaedium, edification, edifice, edile
†aedicula	aedicul-
aemulus	aemul-, im-	to rival	emulate, emulation, emulator, emulous, image, imagerial, imagery, imagination, imaginative, imagine, imitable, imitate, imitation, inimitable, preimage, subimago
aequus	aequ-, -iqu-	even, level	adequacy, adequality, adequate, disequilibrium, equable, equal, equality, equanimity, equant, equation, equational, equative, equator, equatorial, equilibrium, equitable, equity, equivalence, equivalent, inadequacy, inadequate, inequality, iniquitous, iniquity
aes	aer-	ore	aeneator, aeneous, aeruginous, aerugite, aerugo, aim, disesteem, eruginous, esteem, estimable, estimate, inestimable
aestas	aest-	summer	aestival, aestivate, aestivation, estivate, estivator
aestus	aestu-		estuarial, estuarine, estuary
aetās	aet-	age	coetaneity, coetaneous
aevum	aev-	age, eon	age, coeternal, coeval, coevality, eternal, eterne, eviternal, grandevity, grandevous, longevity, longevous, mediaeval, nonage, premediaeval, primaeval, primeval
ager	agr-, -egr-	field	agrarian, agrestal, agricultural, agriculture, nonagrarian, nonagricultural, peragration, peregrine, peregrinus, pilgrim, pilgrimage
†agrellus	agrell-
āla	āl-	wing	aileron, aisle, alar, alate, aliferous, aliform, aligerous
alacer • alacrior	alacr-	quick	alacritous, alacrity, allegresse, allegretto, allegro
albus • albior • albissimus	alb-	dull white	alb, alba, albarium, albedo, albino, albite, album, albumen, albumin, aubade
alga	alg-	seaweed	algae, algal, algicidal, algicide
alius	ali-	other	abalienate, alias, alibi, alien, alienability, alienable, alienate, alienation, aliquot, inalienability, inalienable, nonalien
allium, ālium	alli-	garlic	Allium
alter	alter-	other	adulterant, adulterate, adulteration, adulterine, adulterous, adultery, alter, alter ego, alterability, alterable, alterant, alteration, alterative, inalterable
alternus	altern-		altern, alternant, alternate, alternation, alternative, alternator, bialternant
alumnus	alumn-	alumnus	alumni
alveus	alve-		alveolar, alveolate, alveolus, interalveolar, postalveolar
†alveolus	alveol-
amārus	amar-	bitter	amarelle, amaretti, amaretto, amarine, amaritude, amaro
ambō	amb-	both	ambient, ambiguous
amoenus	amoen-		amenity
amplus • amplior • amplissimus	ampl-	ample	ample, ampliate, ampliation, amplification, amplitude
anas	anat-	duck	Anas, anatine
ancūla	ancūl-		ancillary
†ancilla	ancill-
anguis	angu-	snake	Anguidae, anguiform, Anguilla, anguilliform, anguine, anguineous
anguiculus	anguicul-
†Anguilla	anguill-
angulus	angul-	corner	angular, angularity, angulose, biangular, biangulate, equiangular, equiangularity, multangular, multiangular, nonrectangular, octangle, octangular, quadrangle, quadrangular, quinquangular, rectangle, rectangular, semiangle, semiangular, septangle, septangular, sexangle, sexangular, triangle, triangular, triangularity, triangulation
†angellus	angell-
anima	anim-	breath, life, soul	anima, animal, animalcule, animate, animation, animato, animator, exanimate, inanimate, reanimate
animus	anim-	mind, anger	animadversion, animose, animosity, animus, equanimity, equanimous, multanimous, nonunanimous, pusillanimity, pusillanimous, unanimity, unanimous
annus	ann-, -enn-	year	annals, annates, anniversary, annotinous, annual, annuity, biannual, bicentennial, biennial, biennium, bimillennial, centennial, decennial, millennial, millennium, octennial, per annum, perennate, perennial, quadrennial, quadrennium, quinquennial, quinquennium, semiannual, septennial, sexennial, superannuate, superannuation, triennial, triennium
ānser