lacked
v.v. to not have enough of something that you need or want. You use this when something important is missing.
v. to be deficient in or entirely without a necessary or desirable quality. Transitive in modern usage; the past tense form 'lacked' functions as the head of a predicate taking a direct object.
The soup lacked salt, so I added some.
The candidate had great ideas but lacked the experience needed to manage such a large team.
The initial draft of the report lacked the statistical rigor required for publication, forcing the researchers to re-examine their primary data sets over several months.
The verb is transitive and takes a direct object without a preposition.
The room lacked of furniture.The room lacked furniture.The verb 'lack' is transitive and does not take the preposition 'of', though the noun 'lack' does.