felicibus
felicibus is a Latin form of felix, meaning “fortunate, happy; fruitful”. It is the ablative plural adjective or dative plural adjective.
Found 42 times in the Latin texts on Socratos.
Where it is used
Vergil, Georgics 2.81: exsilit ad caelum ramis felicibus arbos
All forms of felix (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.