Synonyms aware (knowing about something): We are not aware of the situation.
Conscious (awake and able to see, hear, and think): He was fully conscious during the operation.
Alert (quick to notice, understand and act in a particular situation): I try hard to stay alert while driving at night.
Thinking (intelligent): Thinking people urge that we must stop wasting our natural resources.
Knowledgeable (having information, understanding, or skill): She seems very knowledgeable.
Mindful (to be careful or not to forget about something): We must also be mindful of the consequences of anxiety.