Words formed from any letters in refrain plus optional blank

c -

ricer₈

d -

rider₆

g -

renig₈

rerig₇

l -

renal₇

rifle₉

m -

rimer₈

n -

renin₇

p -

repin₉

ripen₉

riper₈

s -

resin₆

rinse₆

risen₆

riser₅

safer₈

saner₆

sarin₆

serai₅

serif₈

serin₆

siren₆

sirra₅

snare₆

t -

retia₅

riant₆

tarre₅

tenia₆

terai₅

terra₅

tinea₆

train₆

trier₅

trine₆

u -

rerun₇

uraei₆

urare₆

urari₆

urine₇

v -

riven₁₀

river₉

w -

rewan₉

rewin₉

wafer₁₁

wirer₈

wirra₈

wrier₈

x -

xenia₁₃

y -

yarer₇

yearn₈

z -

zaire₁₄