From semi- + bouffant. <span class="searchmatch">semibouffant</span> (not comparable) Somewhat or partly bouffant....
and the Ants. bouffant cap bouffant gown bouffanty buffont (buffant) <span class="searchmatch">semibouffant</span> bouffant present participle of bouffer “bouffant”, in Trésor de la langue...
semibituminous semi-bluff semiblunt semiboiled semibold semiboneless semiboner <span class="searchmatch">semibouffant</span> semibounded semibourgeois semibrachiation semibrachiator semibulk semibull...