nascent /nāˈsənt or nasˈənt/

1. Coming into being
2. Beginning to develop
3. (of an atom or substance, esp hydrogen) at the moment of its formation and therefore with a higher reactivity than usual

• useful lives
• useful load
• useful loads
• usefully
• usefulness
• usefulnesses
• useless
• uselessly
• uselessness
• uselessnesses
• Usenet
• usen't
• user
• user-friendly
• user ID
• user IDs
• user interface
• user interfaces
• username
• usernames
• users
• uses
• use up
• USGA
• U-shaped