i Register
In some senses, retentive is marked as slang, obsolete. Watch for register when choosing this word.
retentive
UK /ɹɪˈtɛntɪv/ US /ɹɪˈtɛntɪv/
adj 2noun 1
Definitions
adj
1
Having power to retain.
a retentive memory
a soil that is highly retentive of rainwater
2
Anal-retentive.
noun
1
That which retains or confines; a restraint.
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