All iron-jawed synonyms

adj iron-jawed

• certain — If you are certain about something, you firmly believe it is true and have no doubt about it. If you are not certain about something, you do not have definite knowledge about it.
• sure — free from doubt as to the reliability, character, action, etc., of something: to be sure of one's data.
• settled — to appoint, fix, or resolve definitely and conclusively; agree upon (as time, price, or conditions).
• resolved — firm in purpose or intent; determined.
• firm — not soft or yielding when pressed; comparatively solid, hard, stiff, or rigid: firm ground; firm texture.
• set — to put (something or someone) in a particular place: to set a vase on a table.
• bent — Bent is the past tense and past participle of bend.
• deliberate — If you do something that is deliberate, you planned or decided to do it beforehand, and so it happens on purpose rather than by chance.
• unbending — not bending or curving; inflexible; rigid.
• fixed — fastened, attached, or placed so as to be firm and not readily movable; firmly implanted; stationary; rigid.
• assertive — Someone who is assertive states their needs and opinions clearly, so that people take notice.
• cocksure — Someone who is cocksure is so confident and sure of their abilities that they annoy other people.
• decisive — If a fact, action, or event is decisive, it makes it certain that there will be a particular result.
• earnest — serious in intention, purpose, or effort; sincerely zealous: an earnest worker.
• inflexible — not flexible; incapable of or resistant to being bent; rigid: an inflexible steel rod.
• intent — something that is intended; purpose; design; intention: The original intent of the committee was to raise funds.
• mulish — of or like a mule, as being very stubborn, obstinate, or intractable.
• positive — admitting of no question: positive proof.
• purposeful — having a purpose.
• resolute — firmly resolved or determined; set in purpose or opinion: Her parents wanted her to marry, but she was focused on her education and remained resolute.
• serious — of, showing, or characterized by deep thought.
• unfaltering — to hesitate or waver in action, purpose, intent, etc.; give way: Her courage did not falter at the prospect of hardship.
• unwavering — to sway to and fro; flutter: Foliage wavers in the breeze.
• unyielding — unable to bend or be penetrated under pressure; hard: trees so unyielding that they broke in the harsh north winds.
• unhesitating — without hesitation; not delayed by uncertainty: an unhesitating decision.
• strong-minded — having a forceful and independent mind.