chronic
Meaning
(of an illness or problem) lasting for a long time and difficult to cure or get rid of
(of a person) having an illness or habit for a long time that is unlikely to change
(informal, disapproving) very bad
Structure
Usage
He suffers from chronic back pain.
The country faces a chronic shortage of affordable housing.
She's a chronic procrastinator who always leaves things to the last minute.
Etymology
The word 'chronic' entered English in the early 15th century via French 'chronique', which itself derived from Latin 'chronicus', ultimately from Greek 'khronikos' meaning 'of time'. The Greek root 'khronos' (time) is central, as the term was originally applied to diseases distinguished by their long duration, in contrast to 'acute' illnesses. This semantic link between the literal root meaning 'time' and the modern abstract meaning of 'long-lasting' or 'persistent' is direct and logical. The pejorative informal sense, as in 'chronically late', is a natural extension of this core idea of a persistent, undesirable condition.
Analysis
'chron' originates from Greek 'khronos', meaning 'time'. It functions as the core root conveying the concept of duration. 'ic' is an adjective-forming suffix of Greek and Latin origin, used to mean 'of, pertaining to, or characterized by'.