The Latin word fluvius
Word fluvius
Meaning river
Synonyms flumen

Other words that might be of interest
fossa ‘ditch’, fluere ‘to flow’, aqua ‘water’, pluvia ‘rain’, lacus ‘lake’, mare ‘sea’, gelu ‘ice’, humidus ‘wet’, aqueus ‘wet’, siccus ‘dry’, amiculum ‘cloak, cape’, cado ‘to fall, drop, plummet, topple’, udus ‘wet, moist, damp’