3 occurrences in 3 dictionaries
Reference: Concupiscence
Easton
desire, Ro 7:8 (R.V., "coveting"); Col 3:5 (R.V., "desire"). The "lust of concupiscence" (1Th 4:5; R.V., "passion of lust") denotes evil desire, indwelling sin.
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Hastings
Concupiscence is intense desire, always in a bad sense, so that it is unnecessary to say 'evil concupiscence' as in Col 3:5. The reference is nearly always to sexual lust.