unsyllabic

1. Not forming a syllable or the nucleus of a syllable; consisting of a consonant sound accompanied in the same syllable by a vowel sound or consisting of a vowel sound dominated by other vowel sounds in a syllable (as the second vowel in a falling diphthong).

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Here are some other words you could make with the letters unsyllabic

Top Words by points	Points	Word Game
billycans	16	Scrabble

2 Letters	Scrabble® Points
ab	4
ai	2
al	2
an	2
as	2
ay	5
ba	4
bi	4
by	7
in	2
is	2
la	2
li	2
na	2
nu	2
si	2
un	2
us	2
ya	5

3 Letters	Scrabble® Points
abs	5
aby	8
ail	3
ain	3
ais	3
alb	5
all	3
als	3
ani	3
any	6
ays	6
bal	5
ban	5
bas	5
bay	8
bin	5
bis	5
bun	5
bus	5
buy	8
bys	8
cab	7
can	5
cay	8
cis	5
cub	7
icy	8
ill	3
ins	3
lab	5
lac	5
las	3
lay	6
lib	5
lin	3
lis	3
lun	3
nab	5
nay	6
nib	5
nil	3
nub	5
nus	3
sab	5
sac	5
sal	3
san	3
sau	3
say	6
sib	5
sic	5
sin	3
sly	6
sub	5
sun	3
syn	6
uni	3
uns	3
yas	6
yin	6

4 Letters	Scrabble® Points
ably	9
abys	9
acyl	9
ails	4
ains	4
albs	6
alls	4
ally	7
anil	4
anis	4
anus	4
asci	6
ayin	7
bail	6
ball	6
bals	6
banc	8
bani	6
bans	6
bays	9
bias	6
bill	6
bins	6
blin	6
bull	6
buna	6
buns	6
busy	9
buys	9
cabs	8
cain	6
call	6
cans	6
caul	6
cays	9
clan	6
clay	9
club	8
cubs	8
cull	6
cyan	9
ills	4
illy	7
inby	9
inly	7
isba	6
labs	6
lacs	6
lacy	9
laic	6
lain	4
lays	7
lias	4
libs	6
lily	7
lins	4
liny	7
luna	4
luns	4
luny	7
nabs	6
nail	4
nays	7
nibs	6
nill	4
nils	4
nubs	6
null	4
sail	4
sain	4
sall	4
saul	4
scab	8
scan	6
sial	4
sill	4
slab	6
slay	7
slub	6
snib	6
snub	6
suba	6
syli	7
sync	9
ulan	4
ulna	4
unai	4
unci	6
unis	4
yill	7
yins	7
yuan	7
yuca	9

5 Letters	Scrabble® Points
acyls	10
anils	5
aulic	7
ayins	8
bails	7
balls	7
bally	10
bancs	9
basic	9
basil	7
basin	7
bialy	10
bills	7
billy	10
binal	7
blain	7
bliny	10
bulla	7
bulls	7
bully	10
bunas	7
bunya	10
cabin	9
cains	7
calls	7
cauls	7
clans	7
clays	10
clubs	9
culls	7
cully	10
cyans	10
incus	7
inlay	8
laics	7
layin	8
lilac	7
linac	7
lunas	5
lysin	8
nabis	7
nails	5
nills	5
nubia	7
nulls	5
sabin	7
salic	7
sally	8
saucy	10
scall	7
scaly	10
scuba	9
scull	7
sibyl	10
silly	8
slain	5
slily	8
snail	5
sulci	7
sully	8
ulans	5
ulnas	5
unais	5
uncia	7
unica	7
unlay	8
unsay	8
yills	8
yuans	8
yucas	10
yulan	8

6 Letters	Scrabble® Points
ablins	8
abulic	10
acinus	8
bialys	11
blains	8
bunyas	11
busily	11
cabins	10
callus	8
caulis	8
clinal	8
cullay	11
cullis	8
inlays	9
insula	6
lacily	11
layins	9
lilacs	8
linacs	8
lunacy	11
nubias	8
sabicu	10
scilla	8
sluicy	11
suably	11
sulcal	8
uncial	8
unlays	9
usably	11
yulans	9

7 Letters	Scrabble® Points
cullays	12
saucily	12
subclan	11
syllabi	12
uncials	9

8 Letters	Scrabble® Points
bacillus	12
billycan	15
syllabic	15
uncially	13

9 Letters	Scrabble® Points
billycans	16