What is a antonym for the word wean?

There isn't a single perfect antonym for "wean" because the word has a few different meanings. Here are some options depending on the context:

If "wean" means to gradually stop a baby from breastfeeding:

* Nourish

* Suckle

* Breastfeed

If "wean" means to gradually stop depending on something:

* Indulge

* Foster

* Encourage

* Cultivate

If "wean" means to gradually stop using something:

* Maintain

* Continue

* Perpetuate

* Sustain

The best antonym will depend on the specific context of the sentence.