observation - For an experiment, the scientists usually write down their observations first before drawing any conclusion.
emphasize - If we want to emphasize a sentence in a piece of writing, we can just make it bold, italic, or underline it.
reaction - Her reaction to the breakup was just simply bursting into tears.
define - Dictionaries are the simplest way to define words.
tersely - As soon as he ran up on stage with a loose tie and a pair of untied shoes, he tersely began his speech.
breach - A breach on the ship sank everything and killed everyone on board.
riveted - Taylor Swift always rivets everyone's attention by her amazing voice.
vigil - She always keeps a constant vigil over her boyfriend so that he can't be around with other girls.