To make somebody able (to do, or to be, something); to give sufficient ability or power to do or to be; to give strength or ability to.
To qualify or approve for some role or position; to render sanction or authorization to; to confirm suitability for.
To yield the opportunity or provide the possibility for something; to provide with means, opportunities, and the like.
To imply or tacitly confer excuse for an action or a behavior.
To activate, to make operational (especially of a function of an electronic or mechanical device).
To affirm; to make firm and strong.
To put a circuit element into action by supplying a suitable input pulse.
To formally give (someone) some power or authority.
To surround, accompany, or attend.
To spend money, time, or energy on something, especially for some benefit or purpose; used with in.
To commit money or capital in the hope of financial gain.
To ceremonially install someone in some office.
To lay siege to.
To be involved in; to form strong attachments to.
To prepare for lost wax casting by creating an investment mold (a mixture of a silica sand and plaster).
To make investments.
To envelop, wrap, cover.
To formally give (power or authority).
An unnamed tropical weather pattern "to investigate" for development into a significant (named) system.