Letters that make double-barrelled
a, o, b, d, e, l, r, u are letters that make 'double-barrelled'
Words within double-barrelled
el, ell, LED, BA, DO, do, re, Ba, ar, ED, EL, barrelled, double, bar, barrel, BAR, AR, Re, LE, Ar are words within 'double-barrelled'