1. On certain occasions or in certain cases but not always
   "sometimes she wished she were back in England"; "sometimes her photography is breathtaking"; "sometimes they come for a month; at other times for six months"

Encyclopedia: Sometimes

• space shuttle
• space sickness
• space station
• space travel
• space vehicle
• space writer
• space-reflection symmetry
• space-time
• space-time continuum
• spacecraft
• spacecraft clock time
• spacecraft event time
• spaced
• spaced-out
• spacefaring
• spaceflight
• spaceless
• spaceman
• spacer
• spaceship
• spacesuit
• spacewalk
• spacewalker
• spaceward
• spacewards