not ... at all

even if ...,...cannot

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

sharp

sharp; pointed; acute; keen

(literary) keen

(literary) sharp weapon / (literary) elite; pick

sharp (of a blade etc.) / pointed, penetrating (question etc.) / sharp, perceptive

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend