I don't see the phrase in your question, but some tips for figuring it out are:
- Context clues: Read the rest of the sentence and leave that phrase blank. For example: "Bob ate some very red, scrumptious apples. 'These are delicious!' he said." Take out the word scrumptious, and try to add in another word that fits. You might come up with words like "yummy" or "delicious" which could clue you into the meaning of scrumptious.
- Chronological Order: If something is towards the beginning, middle, or end, that could give you clues. For example, if the phrase is: "I hope you have a nice night," and it is the end of the story, the meaning of the phrase could be that you are telling somebody goodbye. Whereas, if the phrase is: "I hope you're having a nice night!" and it's the beginning of the story, then that could be a conversation-starter, instead of a goodbye.
- Scout out known words: If you don't know what a phrase is, try scouting out words within the phrase that you know. For example,if the phrase is "Multiple juvenile delinquents were incarcerated in the prison" and you don't know a lot of the words in there, such as "delinquents" or "incarcerated" then you can use words that you do know, such as "juvenile" and "prison" to understand the meaning of the phrase altogether.
Hope this helps!