The oldest Latin inscriptions do not distinguish between /ɡ/ and /k/, representing both by C, K and Q according to position. K was used before A; Q was used (if at all) before O or V; C was used elsewhere. This is explained by the fact that the Etruscan language did not make this distinction. C originated as a turned form of Greek Gamma (Γ) and Q from Greek Koppa (Ϙ). In later Latin, K survived only in a few forms such as Kalendae; Q survived only before V (representing /kw/), and C was used everywhere else. G was later invented to distinguish between /ɡ/ and /k/; it was originally simply a C with an additional diacritic.
Classical Latin period
An attempt by the emperor Claudius to introduce three ubiquitous was short-lived, but after the conquest of Greece in the 1st century BC the letters Y and Z were, respectively, adopted and readopted from the Greek alphabet and placed at the end. Now the new Latin alphabet contained 23letters:
Letter
A
B
C
D
E
F
G
H
I
K
L
M
Name
ā
bē
cē
dē
ē
ef
gē
hā
ī
kā
el
em
Pronunciation (IPA)
/aː/
/beː/
/keː/
/deː/
/eː/
/ef/
/ɡeː/
/haː/
/iː/
/kaː/
/el/
/em/
Letter
N
O
P
Q
R
S
T
V
X
Y
Z
Name
en
ō
pē
qū
er
es
tē
ū
ex
ī Graeca
zēta
Pronunciation (IPA)
/en/
/oː/
/peː/
/kuː/
/er/
/es/
/teː/
/uː/
/eks/
/iː ˈɡraika/
/ˈzeːta/
The Latin names of some of the letters are disputed. In general, however, the Romans did not use the traditional (Semitic-derived) names as in Greek, but adopted the simplified names of the Etruscans, which derived from saying the sounds of the letters: the vowels stood for themselves, the names of the stop consonant letters were formed by adding the neutral vowel e, which in Latin became /eː/ (except for K and Q, which were distinguished from C by appending the vowel which followed them in Etruscan orthography), and the names of the continuant consonants were formed by preceded the sound with /e/. X was named /eks/ rather than /kseː/, as /ks/ could not begin a word in Latin (and possibly Etruscan). When the letter Y was introduced into Latin, it was probably called hy /hyː/ as in Greek (the name upsilon being not yet in use), but was changed to i Graeca ("Greek i") as Latin speakers had difficulty distinguishing the sounds /i/ and /y/. Z was given its Greek name, zeta, when it was borrowed.
Roman cursive script, also called majuscule cursive and capitalis cursive, was the everyday form of handwriting used for writing letters, by merchants writing business accounts, by schoolchildren learning the Latin alphabet, and even by emperors issuing commands. A more formal style of writing was based on Roman square capitals, but cursive was used for quicker, informal writing. It was most commonly used from about the 1st century BC to the 3rd century AD, but it probably existed earlier than that.
Late Antiquity
The Latin alphabet spread from Italy, along with the Latin language, to the lands surrounding the Mediterranean Sea with the expansion of the Roman Empire. The eastern half of the Roman Empire, including Greece, Asia Minor, the Levant, and Egypt, continued to use Greek as a lingua franca, but Latin was widely spoken in the western half of the Empire, and as the western Romance languages, including French, Italian, Portuguese, Spanish and Catalan, evolved out of Latin they continued to use and adapt the Latin alphabet.
Middle Ages
The lower case (minuscule) letters developed in the Middle Ages from New Roman Cursive writing, first as the uncial script, and later as minuscule script. The old Roman letters were retained for formal inscriptions and for emphasis in written documents. The languages that use the Latin alphabet generally use capital letters to begin paragraphs and sentences and for proper nouns. The rules for capitalization have changed over time, and different languages have varied in their rules for capitalization. Old English, for example, was rarely written with even proper nouns capitalised; whereas Modern English of the 18th century had frequently all nouns capitalised, in the same way that Modern German is today.
The use of the letters I and V for both consonants and vowels proved inconvenient as the Latin alphabet was adapted to Germanic and Romance languages. W originated as a doubled V (VV) used to represent the sound [w] found in Old English as early as the 7th century. It came into common use in the later 11th century, replacing the runic Wynn letter which had been used for the same sound. In the Romance languages, the minuscule form of V was a rounded u; from this was derived a rounded capital U for the vowel in the 16th century, while a new, pointed minuscule v was derived from V for the consonant. In the case of I, a word-final swash form, j, came to be used for the consonant, with the un-swashed form restricted to vowel use. Such conventions were erratic for centuries. J was introduced into English for the consonant in the 17th century (it had been rare as a vowel), but it was not universally considered a distinct letter in the alphabetic order until the 19th century.
The names of the letters were largely unchanged, with the exception of H. As the sound /h/ disappeared from the Romance languages, the original Latin name hā became difficult to distinguish from A. Emphatic forms such as [aha] and [axxa] were used, developing eventually into acca, the direct ancestor of English aitch.