unthreatening vs well-meaning

unthreatening and well-meaning both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unthreatening	No	Yes	No	No
well-meaning	No	Yes	No	No

As adjectives, unthreatening and well-meaning are synonyms defined as:

unthreatening (adjective)	well-meaning (adjective)
not unfriendly or threatening	not unfriendly or threatening
	marked by good intentions though often producing unfortunate results