A contraction is a word or phrase that has been shortened by dropping one or more letters. In writing, an apostrophe is used to indicate the place of the missing letters.
While certain numerous contractions may appear clumsy, they are really rather common in spoken English. People frequently use phrases like this.
She wouldn't have been held up at security if she hadn't shouted at the executive.
When speaking, we frequently employ contractions since the words seem to blend together naturally. In spoken English, this is perfectly acceptable, yet it is not seen as excellent writing practice.