Heedlessness and Source

Heedlessness noun - Failure to take the care that a cautious person usually takes.

Source and heedlessness are semantically related. In some cases you can use "Source" instead a noun "Heedlessness".

Source noun - A point or place at which something is invented or provided.

Heedlessness and source are semantically related. Sometimes you can use "Heedlessness" instead a noun "Source".