plural of sickness unto death

(pathology) An arrhythmia presumably caused by a malfunction of the sinus node, the heart's primary pacemaker.

(informal) To cause someone to worry to a great degree. / (informal, reflexive) To worry to a great degree.

(Britain, idiomatic) Extremely annoyed about, fed up, tired of.

(informal) Bovine ephemeral fever.

That one is extremely competent at their job

In receipt of benefits or allowances for sickness, disability or incapacity for a long period of time, see on the sick

(archaic, politics) Qing Empire / Empire of China / China

simple past tense of go down like a cup of sick

Third-person singular simple present indicative form of go down like a cup of sick