Someone or something that is reliable can be trusted or believed because he, she, or it works or behaves well in the way you expect
Reliable
Not good at making decisions
Indecisive
Firm and not changing in your friendship with or support for a person or an organization, or in your belief in your principles
Loyal
Examining or liking to examine things very carefully
Analytical
People who do not often talk about or show their feelings or thoughts
Reserved
Easily annoyed by someone's mistakes or because you have to wait
Impatient
Easily upset by the things people say or do, or causing people to be upset, embarrassed, or angry
Sensitive
Not thinking enough or not worrying about the possible results of what you do
Irresponsible
Likely to change suddenly and without reason and therefore not able to be predicted (= expected before it happens) or depended on
Unpredictable
Too interested in your own appearance or achievements
Vain
Having a strong wish to be successful, powerful, or rich
Ambitious
People like to meet and spend time with other people
Sociable
Interested in learning about people or things around you
Curious
Not proud or not believing that you are important
Humble
Having or using good judgment; reasonable
Sensible