Broad
Broad, spacious, vast, outspread, loose, roomy, full, generously cut, voluminous, slack, shapeless, ill-fitting, billowing, extensive, open, spread out, baggy, capacious, ample, generous, commodious, oversize, sloppy, sacklike, ballooning, and floppy.
Fully open
Fully open, agape, yawning, gaping, and wide open.
Comprehensive
Comprehensive, broad, large, vast, far-ranging, expansive, encyclopedic, general, all-embracing, catholic, cross-disciplinary, multidisciplinary, ample, extensive, large-scale, immense, wide-ranging, sweeping, exhaustive, all-inclusive, universal, compendious, and interdisciplinary.
Off target
Off target, wide of the mark/target, off course, nowhere near, off beam, off the mark, inaccurate, astray, and out.
Fully
Fully, as far/much as possible, completely, open wide, agape, cavernous, to the fullest/furthest extent, all the way, fully open, gaping, and yawning.