Phonosemantic compound. 寸 represents the meaning and 甫 represents the sound. Based on the original meaning "scatter". The meaning later shifted to "announce".
寸 hints at the original meaning of 尃, "scatter",
which is no longer the most common meaning of 尃 in modern Mandarin.
Character Evolution
BronzeLate Western Zhou~800 BCBronzeLate Western Zhou~800 BCBronzeLate Spring and Autumn~500 BCSealWarring States (Chu)475-221 BCSealWarring States (Chu)475-221 BCSealWarring States (Chu)475-221 BCSealWarring States (Chu)475-221 BCSealQin221-206 BCSealShuowen~100 ADRegularModern