1. Sexually faithful
   "she was true to her significant other"

See also: faithful

• lifeblood
• lifeboat
• lifeguard
• lifehack
• lifeless
• lifelessly
• lifelessness
• lifelike
• lifeline
• lifelong
• lifer
• lifesaver
• lifesaving
• lifesize
• lifespan
• lifestyle
• lifetime
• Triglochin maritima
• triglyceride
• triglyph
• trigon
• trigonal
• Trigonella
• Trigonella foenumgraecum
• Trigonella ornithopodioides