word of mouth

to believe what someone says without asking for evidence

from the very beginning of an activity or process

to claim falsely that someone expressed an opinion or made a statement

using creative, low-cost, data-driven experiments to grow a user base rapidly

an unpleasant piece of information; (informal) a person or thing likely to cause trouble

to pause and reconsider a situation (step back), or develop an idea or action beyond its current point (step further)