Fatigue shown by alien left in E-Type? (3,3)
I believe the answer is:
jet lag
'fatigue' is the definition.
(I know that jet lag is a type of fatigue)
'alien left in e-type?' is the wordplay.
'alien' becomes 'et' (extraterrestrial).
'left' becomes 'l' (common abbreviation).
'in' is an insertion indicator.
'e-type?' becomes 'jag' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'et'+'l'='etl'
'etl' inserted within 'jag' is 'JET-LAG'.
'shown by' acts as a link.
Can you help me to learn more?
(Other definitions for jet lag that I've seen before include "Exhaustion after air travel" , "Discomfort due to changing time zones when flying" , "Delayed tiredness after long flight by air" , "Effect of long-distance flight" , "Sometimes a result of international travel" .)