Pointiest is the superlative form of pointy—having the sharpest or most pronounced point among a group: She picked up the pointiest stick she could find.
Often used playfully or with exaggeration: That's the pointiest hat I've ever seen.
1. superlative — sharpest, Having the finest edge; most (Greatest in number); extreme (Furthest from moderate); ultimate (Highest or most extreme); maximum · utmost · keenest · finest · acutest · narrowest
2. sharp — tip, End or gratuity; spike (Sharp rise or point); needle (Pointed implement for sewing); spear (Pole with sharp point); blade · thorn · prong · barb · dagger · stiletto · lance · quill · tack · awl
3. geometric — apex, Uppermost point or culmination; vertex (Point where edges converge); angle (Geometric measure of rotation); triangle (Three-sided plane figure); pyramid · cone · wedge · spire · pinnacle · prism · taper · corner · obelisk · peak