Choose the perfect synonym or antonym for the word

Flexible

/ˈfleksəbəl/

Able to change easily and adapt to different conditions or situations.

Synonyms:

The policy is flexible enough to accommodate most scenarios.

She maintains a flexible approach to solving complex issues.

A flexible schedule allows for greater work-life balance.

Mid 15th century, from Latin flexibilis, meaning that may be bent, from flexus, the past participle of flectere, meaning to bend.

13 mentions per 1 million words

Moderate

Hint: Frequency according to COCA