English translation of '不知所措'

• file clerk
• file extension
• filefish
• file folder
• file management
• file manager
• filemot
• file name
• filename
• filer
• file server
• file sharing
• file-sharing
• filet
• filet mignon
• file transfer protocol
• filial
• filially
• filialness
• filiate
• filiation
• filibeg
• filibuster
• filibusterer
• filibusterism