diligent

adjectives

quietly and steadily persevering especially in detail or exactness

"a diligent (or patient) worker"; "with persevering (or patient) industry she revived the failing business"

diligent, persevering

is derived from

diligence

characterized by care and perseverance in carrying out tasks

"a diligent detective investigates all clues"; "a diligent search of the files"

diligent

is derived from

diligence

antonym

negligent

is similar to

marked by care and persistent effort

"her assiduous attempts to learn French"; "assiduous research"; "sedulous pursuit of legal and moral principles"

assiduous, sedulous

is similar to

characterized by hard work and perseverance

hardworking, industrious, tireless, untiring

see also

exercising caution or showing care or attention

"they were careful when crossing the busy street"; "be careful to keep her shoes clean"; "did very careful research"; "careful art restorers"; "careful of the rights of others"; "careful about one's behavior"

careful