mild-mannered 
adjective
(Of a person) gentle and not given to extremes of emotion: karate was introduced into Japan by a mild-mannered Okinawan schoolmaster...
- And he is on BBC2 in the evenings now, asking his aggressive questions at mild-mannered members of the public.
- He sounds like a slightly demented five-year-old child, while at the same time looking like anybody's mild-mannered uncle.
- He's normally mild-mannered, easy-going and a joy to work for.
- acclaim
- acclaimed
- acclaimer
- acclamation
- acclamator
- acclamatory
- acclimatable
- acclimatation
- acclimate
- acclimation
- acclimatisable
- acclimatise
- acclimatiser
- acclimatizable
- acclimatization
- acclimatization garden
- acclimatization society
- acclimatize
- acclimatizer
- acclimator
- acclivitous
- acclivity
- acclivous
- ACCM
- accolade