1) Double triple 2) Increase from 5 to 30 3) Multiple 4) Multiply by six 5) Sixfold 6) Twice triple 1) Multiple 2) Sixfold 
• (a.) Six times as much; sixfold. • (a.) Divisible by six; having six beats; as, sixtuple measure.
Sex'tu·ple adjective [ Formed (in imitation of quadruple ) from Latin sextus sixth: confer French sextuple .] 1. Six times as much; sixfold. 2. (Mus.) Divisible by six; having six beats; as, sixtuple measure. 
[adj] - having six units or components
A group of six items. See also: Triple.
sixfold adjective having six units or components