A primitive root; to be familiar with; by implication to minister {to} be serviceable {to} becustomary: - acquaint ({self}) be {advantage} X {ever} ({be} [un-]) profit ({-able}) {treasure} be wont.
Verse
Matrix
Ecc 1:17And I gave my heart to know wisdom, and to know madness and follyH5531: I perceived that this also is vexation of spirit.
Ecc 2:3I sought in mine heart to give myself unto wine, yet acquainting mine heart with wisdom; and to lay hold on follyH5531, till I might see what was that good for the sons of men, which they should do under the heaven all the days of their life. ▼▼
Ecc 2:12¶ And I turned myself to behold wisdom, and madness, and follyH5531: for what can the man do that cometh after the king? even that which hath been already done. ▼
Ecc 7:25I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishnessH5531and madness: ▼
Ecc 10:1Dead flies cause the ointment of the apothecary to send forth a stinking savour: so doth a little follyH5531 him that is in reputation for wisdom and honour. ▼