General Synonyms:
* Sprout
* Bud
* Shoot up
* Develop
* Emerge
* Appear
* Take root
* Thrive
* Flourish
More Specific Synonyms:
* Germinate (for plants)
* Expand (for businesses, ideas)
* Mature (for people, animals, plants)
* Increase (for numbers, size)
Example Sentences:
* The seeds began to grow after a few days of warm weather. (Sprout, bud, shoot up)
* The company has begun to grow its market share. (Expand, develop, thrive)
* The child began to grow into a responsible adult. (Mature, develop)
The best synonym to use will depend on the specific context and the nuance you want to convey.