To clear something away or clear something up
Encoding Strategies:
mnemonic

disperse
to scatter / clear
+
-ar
verb suffix
Despejar means to clear and sounds like the English word disperse0, since when you disperse something, you clear it away.
despejar
to clear, to clear up
To physically clear something away.
- Los bomberos despejaron la carretera tras el accidente = The firefighters cleared the road after the accident
- Despeja la mesa antes de comer = Clear the table before eating
to clear up, to clarify
To clear up obstructions in understanding, such as doubts, confusion, or unknowns.
- El profesor despejó todas mis dudas = The teacher cleared up all my doubts
- Necesito que me despejes esta confusión = I need you to clarify this confusion for me
despejarse
to clear one's head, to wake up (from grogginess)
To clear oneself of mental obstructions like mental fog and tiredness.
- Salí a caminar para despejarme un poco = I went for a walk to clear my head
- Tómate un café para despejarte = Have a coffee to wake up