| studded | (adjective) dotted or adorned with or as with studs or nailheads; usually used in combination | - |
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| studied | (adjective) produced or marked by conscious design or premeditation | - |
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| studious | (adjective) marked by care and effort | - |
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| (adjective) characterized by diligent study and fondness for reading | Synonyms: bookish |
| unstudied | (adjective) not by design or artifice; unforced and impromptu | Synonyms: uncontrived |
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| (adjective) lacking knowledge gained by study often in a particular field | - |
| unstudious | (adjective) not studious | - |
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