knocks over with feather (verb) astound: amaze
Sinonime: acicular, aciculate, acuminate, acuminous,
acute, arrowlike, barbed, cornered, cuspidate, edged,
fine,
keen, mucronate, peaked, piked, pointy, pronged, sagittal, sagittate,
sharp, sharp-cornered, spiked
Antonime: blunt,
dull