diathesis /dī-athˈi-sis/

1. A particular condition or habit of body, esp one predisposing to certain diseases (medicine)
2. A habit of mind

diathetic /dī-ə-thetˈik/ adjective

• night-ravens
• night-rest
• night-rests
• nightrider
• nightriders
• night-robe
• night-robes
• night-rule
• night-rules
• nights
• night safe
• night safes
• night school
• night schools
• night-season
• night-seasons
• nightshade
• nightshades
• night shift
• night shifts
• nightshirt
• nightshirts
• night-shriek
• night-shrieks
• nightside