1. (of quantities) imprecise but fairly close to correct
   "holds 3 gallons, more or less"
   - approximately, about, close to, just about, some, roughly, around, or so 
2. To a small degree or extent
   - slightly, somewhat

Encyclopedia: More or less

• bound form
• bound morpheme
• bound off
• bound up
• boundary
• boundary condition
• boundary layer
• boundary line
• bounded
• bounded interval
• boundedness
• bounden
• bounder
• bounderish
• boundless
• boundlessly
• boundlessness
• bounds
• bounteous
• bounteously
• bounteousness
• bountied
• bountiful
• bountifully
• bountifulness