- Steal my prefix and I'll belong.
- Steal my infix and I'll be heavy.
- Steal my suffix and I'll be strong.
- Steal my whole and I'll be gone.
Leave me be, for I am a community.
Could this 'community' be a:
TOWN?
Steal my prefix and I'll belong.
If we remove the first letter (T) we get OWN - a word with connotations of something belonging.
Steal my infix and I'll be heavy.
Remove the middle W and we get TON - a heavy weight.
Steal my suffix and I'll be strong.
Remove the last letter (N) and we get TOW - an action which can be done by something strong (like a tugboat or a truck).
Steal my whole and I'll be gone.
Remove all the letters and you have nothing left!