to state to, to announce
旉 centers on formally putting something into words for others: stating, announcing, or declaring information openly.
旉 is a variant form of 敷, combining 甫 (which may contribute sound) with 方 (possibly related to spreading or direction). The exact historical development is uncertain.
The top 甫 suggests a beginning or first step, and the bottom 方 points in a direction. Together they picture the moment you first point something out and announce it.
For フ, imagine a town crier announcing news with a loud 'Foo!' sound: Foo -> フ, and the announcement spreads in all directions.