The word “Predicament” is used to describe a situation where ailment (i.e., difficulty or trouble) can be predicted with ease.
“Predilection” should remind you of pre-direction. You have already decided your direction in favor of something. Remember thus!
“Exculpate” should remind you of ex-culprit. That is, you were previously thought to be a culprit but now: no more! You are clear from the charge!
You are vindicated when all indications prove that you are right, pointing towards your victory (“V” for “Victory”).
You put the habit, belief or attitude firmly inside the grain making the habit, belief or attitude an inherent part of the grain.
You were at a party. To prove that, you use another alive person to stand as proof because he/she saw you in that party.
Additionally, “Alibi” in Latin means “in or at another place”.
“Occlude” rhymes with “Conclude”. You close up an event by concluding it. Remember thus!