in a definite and clear manner due to being based on facts instead of ideas or guesses
in a way that shows confidence and trust in oneself or another person's abilities, plans, etc.
to check the accuracy or validity of something by using alternative sources or methods
an act of determining the accuracy or credibility of something by comparing it with various sources
someone who is sure to do something or something that is sure to happen or one is certain about
in a critical and arrogant manner therefore refusing to consider other's opinions
something that is assumed to be true or already decided upon before any evidence or arguments are presented
a person who officially makes a promise or gives assurance to be accountable for someone or the occurrence of something