Bound
Bound adjective - Fully committed to achieving a goal.
Usage example: I am bound and determined to write a novel before I turn 30
Sure is a synonym for bound in certain topic. In some cases you can use "Sure" instead the word "Bound" as an adjective or a verb, when it comes to topics like obligated.
Both words in one sentence
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Much later on, Quinn gets in a car accident and the doctors aren't sure whether she'll be permanently wheelchair-bound.
Source: Throwing Off the Disability -
Bound and Gagged: Well, just bound: Sykes makes sure Jenny can't escape by tying her wrists behind a chair and having his dogs surround her.
Source: Disney / Oliver & Company -
Then there's this, when Krin calls out Severus for Tempting Fate: Krin: "Oh, I'm sure there won't be orks all over the thing we're after." Or "Hey, we'll be safe in here." What about "This BBQ sauce is bound to conceal our scent from those sabrehounds"?
Cite this Source
Sure and Bound. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/bound/sure
Bound & Sure. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/bound/sure>.
Sure or Bound. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/bound/sure.
Google Ngram Viewer shows how "bound" and "sure" have occurred on timeline