1. In response to an unforeseen need
   "a spur-of-the-moment party"

See also: unprepared

• feminise
• feminism
• feminist
• feminist movement
• feminity
• feminization
• feminize
• femme
• femme fatale
• femocrat
• femoral
• femoral artery
• femoral biceps
• femoral nerve
• femoral pulse
• femoral vein
• femoris
• femto-
• femtochemistry
• femtometer
• femtometre
• femtosecond
• femtovolt
• femur
• fen