Possible Clues:

• Forbidding use at work with engineers
• Lacking luxuries; severe
• Sounds like a plane tree around us
• Strictly speaking be at the wheel alternatively soundly
• Harsh wind from South and East
• Novelist, Jane, changes last character - making her severe
• Strictly speaking, that's you and me in a tree
• Sure eat up and become without luxury
• Stern, grave
• Spartan and abstemious