To conceal.
To extract a substance from blood, sap, or similar to produce and emit waste for excretion or for the fulfilling of a physiological function.
To exude or yield.
To make visible; to expose.
To make visible or expose faults and deficiencies in, usually by outdoing, outperforming, or outcompeting another.
To appear, arrive, or attend, especially suddenly or erratically.
To be easily visible; to be conspicuous.