Blaberos (βλαβερός) means harmful, injurious, or hurtful — causing damage or loss. It appears once in the New Testament, in 1 Timothy 6:9, describing the desires of those who want to get rich: "harmful desires that plunge people into ruin and destruction." The word is related to blaptō (to harm, damage).
The single occurrence of blaberos in 1 Timothy 6:9 sits within Paul's most direct teaching on the spiritual dangers of the love of money. He calls foolish and harmful desires those that "plunge people into ruin and destruction" — the Greek bythizō means to drown or submerge, like being pulled under by a weight. This vivid imagery pictures wealth-lust as a drowning trap. The warning is not against wealth itself but against the love of money (6:10 — philargyria), which uproots people from faith. The antidote is "godliness with contentment" (6:6).