fecundity (n.)youdaoicibaDictYouDict[fecundity 词源字典]
early 15c., from Latin fecunditatem (nominative fecunditas) "fruitfulness, fertility," from fecundus "fruitful, fertile" (see fecund).[fecundity etymology, fecundity origin, 英语词源]
felicitate (v.)youdaoicibaDictYouDict
1620s, "to render happy" (obsolete); 1630s, "to reckon happy;" from Late Latin felicitatus, past participle of felicitare "to make happy," from Latin felicitas "fruitfulness, happiness," from felix "fruitful, fertile; lucky, happy" (see felicity). Meaning "congratulate, compliment upon a happy event" is from 1630s. Related: Felicitated; felicitating. Little-used alternative verb form felicify (1680s) yielded adjective felicific (1865).
fertility (n.)youdaoicibaDictYouDict
early 15c., from Middle French fertilité, from Latin fertilitatem (nominative fertilitas) "fruitfulness, fertility," from fertilis "fruitful, productive" (see fertile).
FreyyoudaoicibaDictYouDict
god of the earth's fruitfulness in Norse mythology, from Old Norse frey "lord," from Proto-Germanic *frawan "lord," from suffixed form of PIE *pro- (see pro-).
fruitful (adj.)youdaoicibaDictYouDict
c. 1300, of trees, from fruit + -ful. Related: Fruitfully; fruitfulness. Of animals or persons from early 16c.; of immaterial things from 1530s.
sterility (n.)youdaoicibaDictYouDict
early 15c., from Middle French sterilite, from Latin sterilitatem (nominative sterilitas) "unfruitfulness, barrenness," from sterilis (see sterile).
unfruitful (adj.)youdaoicibaDictYouDict
late 14c., "barren," from un- (1) "not" + fruitful. Originally literal; figurative sense is attested from c. 1400. Related: Unfruitfully; unfruitfulness.