Chiikawa's name comes from combining chiisai (small) and kawaii (cute). Ai-chan suggests she'd be "Dekkawa", combining kawaii with dekkai (huge). Volley-bu-chan makes the mistake of noting that it sounds like someone who's too big so they're pitiful (kawaisou).

A possible English equivalent to "Chiikawa" would be "Cuteeny," so I went with "Cubusty," since it suggests an easily misunderstood meaning.