a small amount of something
modicum - bit
A ‘modicum’ is a small portion, particularly of something desirable or admirable. While it may not be much, the term indicates that the portion is enough to be effective. For example, if you have had a ‘modicum of success’ with something, you have had a sufficient amount not to have failed.
If you had even a modicum of decency, you would resign immediately after what you’ve done.
Must you be so brash and loud all the time? A modicum of decorum would not go amiss.
Anyone with a modicum of common sense can see that her plan is fanciful to say the least.