Learn how to say Retentive correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word retentive:
1(of a person’s memory) effective in retaining facts and impressions:
he had a highly retentive memory and was an accomplished speaker
2(of a substance) able to absorb and hold moisture:
soil should be rich and moisture retentive
chiefly Medicine serving to keep something in place.
late Middle English: from Old French retentif, -ive or medieval Latin retentivus, from retent- ‘held back’, from the verb retinere (see retain)