AM FL Y (not -er-) (not -ible) explained, explaining (not -plain-) (not expidition) The second syllable is derived from the Latin word pes, pedis (foot, of the foot). This may help you to remember -ped-. The words pedal, pedestrian, pedometer all come from this same Latin root. (not expierience, not -ance) The second syllable is derived from the Latin word per, meaning through. (Experience is what we gain from going ‘through’ something.)