To guarantee or promise (to do something).
To enter into conflict with (an enemy).
To come into gear with.
To enter into (an activity), to participate (construed with in).
To draw into conversation.
To mesh or interlock (of machinery, especially a clutch).
To attract, to please; (archaic) to fascinate or win over (someone).
To engross or hold the attention of; to keep busy or occupied.
To arrange to employ or use (a worker, a space, etc.).
To bind through legal or moral obligation (to do something, especially to marry) (usually in passive).
To enter into battle.
To put beyond hazard of losing or of not receiving; to make certain; to assure; frequently with against or from, or formerly with of.
To make fast; to close or confine effectually; to render incapable of getting loose or escaping.
To get possession of; to make oneself secure of; to acquire certainly.
To make safe; to relieve from apprehensions of, or exposure to, danger; to guard; to protect.
Free from the danger of theft; safe.
Certain to be achieved or gained; assured.
Free from attack or danger; protected.
Free from the risk of eavesdropping, interception or discovery; secret.
Confident in opinion; not entertaining, or not having reason to entertain, doubt; certain; sure; commonly used with of.
Free from anxiety or doubt; unafraid.
Free from the risk of financial loss; reliable.
Firm and not likely to fail; stable.