common law
spoken
unscripted
acknowledged
admitted
articulated
blank
conventional
customary
enunciated
established
fixed
folk
hallowed
handed down
heroic
hoary
immemorial
inveterate
legendary
lingual
linguistic
long-established
long-standing
mythological
nuncupative
of long standing
of the folk
oral
parol
prescriptive
pronounced
received
recognized
rooted
said
silent
sounded
speech
time-honored
traditional
tried and true
true-blue
undeclared
understood
unexpressed
unmentioned
unproclaimed
unpronounced
unpublished
unrecorded
Anglo-Irish
Arthurian
Babylonian
Elizabethan
Gaelic
Germanic
archaic
biblical
extant
restrictive
traditionary
uncollected
unofficial
unprinted
unrevealed
unspoken
Britain
Briton
Britten
Lytton
Witten
bitten
fitton
kitten
leviton
litten
mitten
overwritten
rewritten
smitten
whitten
written