Idioms
An idiom is defined as - a group of words whose meaning is different from the meanings of the individual words.
Idiom:
weigh on/upon (someone)
Meaning:
to be a weight or pressure on someone or something, to worry or upset someone
Example:
The pressure of exams has begun to weigh upon my sister.
List of common idioms, their meanings and examples of their usage in sentences
Idioms are phrases which cannot be understood simply by looking at the meaning of the individual words in the phrase.