"Upseedage" is not a standard English word. It may be a localized term, a specific brand name, or a phonetic transcription from another language. In Japanese, "Nao" often means or "straightforward" .
You might wonder why we are talking about 2018 specs today. The "Nao UpSeedAge 18" era represents a turning point in standard robotics education. Before this, much of the focus was on speed. The UpSeedAge challenge shifted the focus to . nao upseedage 18
Say the phrase out loud. "Nao upseedage" sounds like "Now up-stage-age" or "Know up-seed-age." Try searching those phonetic variations. "Upseedage" is not a standard English word