n.: feel ... in one's bones that, confident, lack of doubt, feeling of certainty, definite news, be sure (certain), firmly believe, be sure of, stand firmly on, bet [put] one's shirt [boots] on [upon], be positive about [of], bet one's life, firm belief, be convinced, be convinced of, be certain of, feel in one's bones, feel ... in one's bones, assurance, satisfaction, positivity, certitude, assuredness
v.: be sure, be sure, or confidently expect, that sth will happen, know
adj.: positive in one's mind, completely sure, sure
Ascertain certainly affirm, acceptance, aver, clearly and forcefully as the truth, strong statement claiming the truth of sth (, certainty, consequentialness, be positive about [of], approve, suspicion, exceedingly, Definitely reliance, reliance, deem, conviction