Senses
肆 unrestrained
acting without restraint or caution; wanton; reckless
肆 four
the number four, used in formal or financial contexts such as on checks to prevent fraud or alteration
肆 shop
(literary) a shop or store; a marketplace
肆 to display
(literary) to display or set out
肆 surname
a Chinese surname
肆 to extend
(literary) to extend or expand