This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Not manifesting characteristic clinical symptoms. Used of a disease or condition.

adj. Of a disease or injury, without signs and symptoms that are detectable by physical examination or laboratory test; not clinically manifest.

adj. relating to the stage in the development of a disease before the symptoms are observed

"But they can also cause "subclinical" infections that, despite a lack of symptoms, are the single biggest risk factor for cervical cancer."

asymptomatic   

subclinically   

asthma-related    glucocorticoid    variolous    gonorrhoeal    filoviral    goal-seeking    pathophysiologic    granulomatous    neurodegenerative    anactual