- 1bound to do/be something certain or likely to happen, or to do or be something There are bound to be changes when the new system is introduced. It's bound to be sunny again tomorrow. You've done so much work—you're bound to pass the exam. It was bound to happen sooner or later (= we should have expected it). You're bound to be nervous the first time (= it's easy to understand). Thesauruscertainbound sure definite guaranteedThese are all words describing something that will definitely happen or is definitely true.certain that you can rely on to happen or be true:It's certain that they will agree. They are certain to agree.bound [not before noun] certain to happen, or to do or be something. Bound is used only in the phrase bound to do/be, etc.:There are bound to be changes when the new system is introduced. You've done so much work—you're bound to pass the exam.sure certain to happen or be true; that can be trusted or relied on:She's sure to be picked for the team. It's sure to rain. Don't worry—it's a sure thing.definite certain to happen; that is not going to change:Our plans are not definite yet.guaranteed certain to have a particular result:That method is guaranteed to take much longer.Patterns certain/sure of something certain/bound/sure/guaranteed to do something certain/definite that… I couldn't say for certain/sure.
- 2 forced to do something by law, duty, or a particular situation bound by something We are not bound by the decision. You are bound by the contract to pay before the end of the month. bound (by something) to do something (formal) I am bound to sayI disagree with you on this point. They are legally bound to appear in court. see also duty-bound
- 3(in compounds) prevented from going somewhere or from working normally by the conditions mentioned Strikebound travelers face long delays. fogbound airports
- 4 (also in compounds) traveling, or ready to travel, in a particular direction or to a particular place homeward bound (= going home) Paris-bound northbound/southbound/eastbound/westbound bound for… a plane bound for Atlanta Idioms
to be closely connected communities bound together by customs and traditions
be bound together by/in somethingjump to other results
to be very busy with something; very interested or involved in something He's too bound up in his work to have much time for his children.
be bound up in somethingjump to other results
very determined to do something I came here bound and determined to put the last 12 months behind me.
bound and determinedjump to other results
closely connected with something From that moment, my life became inextricably bound up with hers.
bound up with somethingjump to other results
to feel that you must do something because of your sense of moral duty She felt honor-bound to attend as she had promised to. compare duty-bound
(feel) honor-bound to do something (formal)jump to other results