pọ̀ sí i verb /k͡pɔ̀ sí ī/
پوَْ سِ اِ (alternative), pọ̀ síi (alternative)
Definitions
  1. to increase, to grow, to augment
    Ìmọ̀ ọmọ yẹn ṣì ń pọ̀ sí i That child's knowledge is still growing
Etymology
From pọ̀ (“to be plenty”) + sí i (“to increase, add on”)
Component words
pọ̀to be plentysí ito increase, add on
Source: Wiktionary, where this word is spelled “pọ si i”. Reference: en-pọ_si_i-yo-verb-YpWGxrOY