studiousstu‧di‧ous /ˈstjuːdiəs $ ˈstuː-/ adjective 
Word Origin
a quiet, studious young man—studiously adverb—studiousness noun [uncountable]
Word OriginWORD ORIGINstudious
ExamplesOrigin:
1300-1400 Latin studiosus, from studium; ➔ STUDY1EXAMPLES FROM OTHER DICTIONARIES
Thesaurus- a quiet, studious girl
- Angus's round glasses made him look studious.
- Francis didn't bother with clothes or make-up. She was an extremely serious and studious young girl.
- Warren's studious attention to detail has made him successful.
- In the circumstances I should have been the good daughter, studious and uninterested in boyfriends.
- Salomon was a studious boy, with no friends, who kept himself to himself.
- She was studious, read much, and liked to talk about the cosmos.
- The gold-rimmed spectacles gave her a studious air.
- There was a more studious side to our visit, too.
- When I was in the tenth grade, a very quiet and studious boy invited me to a dance.
Longman Language Activatorsomeone who works hard► hardworking
Word family · Colleagues described him as a quiet, hardworking young man.· She's not our best employee, but at least she's hardworking.· Unfortunately, the school has just lost two of its best and most hardworking teachers.
► workaholic someone who wants to work all the time and who cannot relax when they are not working: · Steve's doing a sixty-hour week at the moment - I never realized he could be such a workaholic.· Selling is a career that seems to attract workaholics.
► industrious someone who is industrious works hard and effectively: · Most of the students I knew at college were serious and industrious.· The Omanis are industrious people, striving to make their country prosperous.
► dedicated someone who is dedicated works very hard at something because they care about it a lot, even though the job is difficult or does not earn them much money: · Janie's a wonderful nurse - completely dedicated.· The lifeboat service is run by a team of dedicated volunteers.dedicated to: · The group is dedicated to the conservation of the environment.dedicated to doing something: · Worknet has a staff of 28 people, dedicated to assisting the community in their search for employment or training.dedicated sportsman/gardener etc (=someone who is dedicated to their sport, gardening etc): · As a dedicated sportsman, Steven trained every day of the week.
► committed if a person, organization, or country is committed to a particular job or idea, they really believe in it and want it to succeed, and are willing to work very hard to achieve this: committed to: · Edinburgh sees itself as a university of the new millennium, committed to research and teaching.committed to doing something: · Tanzania is a country committed to building socialism in the long term.highly committed: · The company looks for highly committed people, who are willing to study for further professional qualifications in their own time.
► studious someone who is studious likes to spend their time reading and studying in order to be more successful at school, college etc: · Francis didn't bother with clothes or make-up. She was an extremely serious and studious young girl.· Angus's round glasses made him look studious.
► swot British /grind American informal someone who spends too much time studying: · Everyone else in the class hated him because they thought he was a real swot.
WORD FAMILYnounstudentstudystudiousnessadjectivestudiousstudiedverbstudyadverbstudiously
spending a lot of time studying and reading: a quiet, studious young man—studiously adverb—studiousness noun [uncountable]