To try to evade blame or responsibility by making excuses or explaining something away; to dodge an accusation with an excuse.
彼はミスをしても、いつも言い逃れるばかりだ。
Even when he makes mistakes, he always just makes excuses to get out of it.
上司の前で言い逃れるための言い訳を考えるのは得策ではない。
Thinking up excuses to talk your way out of it in front of your boss is not a good idea.
事実を言い逃れることはできないから、正直に話したほうがいい。
You can't explain away the facts, so it's better to speak honestly.