1. Definitely not
   "the prize is by no means certain"
   - not by a long sight, not by a blame sight

Antonym: by all means

• tensional
• tensionless
• tensity
• tensive
• tensor
• tensor tympani
• tent
• tent caterpillar
• tent flap
• tent peg
• tent stitch
• tent-caterpillar moth
• tent-fly
• tentacle
• tentacled
• tentacular
• Tentaculata
• tentage
• tentation
• tentative
• tentatively
• tentativeness
• tenter
• tenterhook
• tenth