Synonyms of the word 
UNTHREATENING → AMICABLE - WELL-MEANING
unthreatening
- adj. Not threatening.
amicable
- adj. Showing friendliness or goodwill.
well-meaning
- adj. With good intentions, often used to reflect positively on a negative outcome or situation.
If you are interested in words, visit the following sites :
- wiktionary.org/unthreatening For complete definition of a word
- 1word.ws/unthreatening to play with words, suffixs, prefixs, etc.