It means you refuse to do something.
It usually refers to a man unwilling to marry, and it means he is unwilling to commit to a relationship that brings with it responsibilities.
Averse.
The word reluctant is an adjective. It means to be unwilling.
If that's "grudgingly," it means reluctantly or resentfully unwilling.
Undogmatic means to be unwilling to accept authority or dogma.
Loth.
If you mean obstinate, it means to be stubborn and unwilling to change ones opinion.
'Unrepentant' means defiant and unwilling to say sorry or atone.
means reserved and unwilling to communicate. The man was reticent when his wife died.
reluctant
A single dose weekly means one dose a week.
Not really, timid means easy going and relaxed, whilst cantankerous means 'grumpy' and unwilling.