早い (hayai) means "fast" or "early." This い-adjective can describe speed (moving quickly) or time (occurring ahead of schedule or earlier than usual). For example, "朝早く起きました。" (Asa hayaku okimashita.) means "I woke up early in the morning."

「早(はや)い」は速(はや)い動(うご)きや時(じ)刻(こく)が早(はや)い時(とき)に使(つか)います。例(れい)：朝(あさ)早(はや)く起(お)きた。