Positive:
* Praise: To express approval or admiration.
* Compliment: To express admiration or praise.
* Encourage: To give support or confidence.
* Cheer: To shout in approval or support.
* Applaud: To clap one's hands in approval.
* Celebrate: To mark a special occasion with joy.
Neutral:
* Ignore: To pay no attention to.
* Disregard: To pay no attention to.
* Overlook: To fail to notice.
* Accept: To agree to something.
* Tolerate: To put up with something.
Other:
* Condone: To forgive or overlook.
* Excuse: To accept as valid.
* Defend: To protect from criticism.
* Support: To give assistance to.
The best antonym for "jeer" depends on the specific context. For example, if someone is being jeered for their performance, you might use "applaud" or "cheer" to describe a positive reaction. If someone is being jeered for their beliefs, you might use "defend" or "support" to describe a counter-reaction.