Phrasal verbs

Is there a rule to decide whether to use a separable verb or inseparable verb?

[Tdol]

Not really. There are some tendencies, such as 'into' generally being inseparable, butit's a case for looking things up in the dictionary, I am afraid.

[julia007]

Hi I'm new here and I have a question What is the meaning of following the phrasal verb: to let off steam ? Is it to calm down or to get fit?

[David L.]

Julia:

It's better to start your own thread so that others, seeing the Title: What does 'let off steam' mean? may also be interested in the answer. Otherwise, it's buried away in someone else's thread.

to let off steam :letting off steam is an informal way of referring to a person getting rid of pent-up strong emotion, usually anger or frustration.