1. Toward the source or against the current
   - upstream

Antonym: downriver

• pers
• Persea
• Persea Americana
• Persea borbonia
• persecute
• persecution
• persecutor
• Perseid
• Persephone
• Persepolis
• Perseus
• perseverance
• perseverant
• perseverate
• perseveration
• persevere
• persevering
• perseveringly
• Pershing
• Persia
• Persian
• Persian cat
• Persian deity
• Persian Empire
• Persian Gulf