Now: {cifnu} = x1 is an infant/baby [helpless through youth/incomplete development] of species x2. |>>> Also infantile. See also makcu, verba.
Proposed: {cifnu} = x1 is an infant, baby, young offspring of species x2. |>>> Not necessarily helpless. See also makcu, verba, panzi.
Reason: a
discussion shows that one shouldn't paid attention to "infant", "helpless" and "infantile" words. Separate words for "altricial/precocial", stages of development like larvae, imago etc. and for immature/mature are to be invented instead.