Reliable and trustworthy - synonyms or related words
does (exactly) what it says on the tin
used for saying that someone or something is exactly what they seem to be, with no hidden qualities, aims, etc.
a reliable person is someone who you can trust to behave well, work hard, or do what you expect them to do
dependable things always work in the way that you expect them to
sensible, reliable, and able to be trusted to do the right thing