arrowlike

barbed sharp

acuminate cornered edged fine keen peaked spiked

acicular aciculate acuminous acute cuspidate mucronate piked pointy pronged sagittal sagittate sharp-cornered

blunt dull

prickly spiky

barbed briery bristling bristly spiked spinous spiny stinging thistly

dull easy smooth solvable unpointed untroublesome