infantlike

From infant +‎ -like.

infantlike (comparative more infantlike, superlative most infantlike)

1. childlike
   • c. 1608–1609 (date written), William Shakespeare, “The Tragedy of Coriolanus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act II, scene i], page 8, column 2:

     I know you can doe very little alone, for your / helpes are many, or elſe your actions would growe won- / derous ſingle : your abilities are to Infant-like, for dooing / much alone.

• “infantlike”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.