Words formed from any letters in niggles plus optional blank

a -

slain₇

slang₉

snail₇

c -

since₉

slice₉

d -

sidle₇

slide₇

snide₇

e -

siege₇

i -

sigil₈

k -

skein₁₀

slink₁₁

l -

snell₈

m -

slime₉

smile₉

o -

solei₆

p -

slipe₉

snipe₉

speil₉

spiel₉

spile₉

spine₉

r -

siren₆

slier₆

s -

signs₈

sines₆

sings₈

t -

stein₆

stile₆

sting₈

tiles₆

tines₆

tinge₈

tings₈

u -

slung₁₀

suing₉

using₉

v -

veils₁₀

veins₁₀

vines₁₀

w -

sinew₉

swine₉

swing₁₁

wiles₉

wines₉

wings₁₁

x -

silex₁₃

y -

yeggs₁₁

z -

zeins₁₅

zings₁₇