IPA: /ˌoʊ.vər.səˈlɪt.əs/
KK: /oʊvərsəˈlɪtəs/
Showing too much concern or care for someone, often to the point of being overly attentive or anxious.
Her oversolicitous nature made her friends feel smothered instead of supported.
Oversolicitous → It is formed from "over-" (meaning excessively) and "sollicitus" (from Latin, meaning anxious or concerned). The word describes someone who is excessively anxious or concerned about the well-being of others.
Think of being 'excessively' ('over-') 'anxious' ('sollicitus') about someone — that's why oversolicitous means being overly concerned.