31 synonyms for retention such as conservation, absorption, and comprehension. Retention is a noun, and its antonyms are loss and forgetfulness.
Absorption, Comprehension, Conservation, Conservation, Containment, Continuation, Control, Duration, Encapsulation, Holding, Keeping, Keeping hold, Maintenance, Memory, Occupation, Persistence, Possession, Preservation, Recall, Recollection, Reservation, Retaining, Retaining power, Retainment, Retentiveness, Safeguarding, Storage, Sustaining, Tenure, and Withholding.