1. 未作承诺的；未表态的
If you are uncommitted, you have not yet decided to support a particular idea, belief, group, or person, or you are unwilling to show your support.

2. （资源等）未指定用途的，未明确用途的
If resources are uncommitted, it has not yet been decided what to use them for.

1. not associated in an exclusive sexual relationship

Synonym: unattached

2. not bound or pledged

3. not busy
not otherwise committed

e.g. he was not available for comment
he was available and willing to accompany her

Synonym: available