assume

Etymology

From Latin assūmō (“accept, take”), from ad- (“to, towards, at”) + sūmō (“take up, assume”).

verb

1. To authenticate by means of belief; to surmise; to suppose to be true, especially without proof
   We assume that, as her parents were dentists, she knows quite a bit about dentistry.
   Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet. Perhaps we assume that our name, address and search preferences will be viewed by some unseen pair of corporate eyes, probably not human, and don't mind that much. 2013-06-14, Jonathan Freedland, “Obama's once hip brand is now tainted”, in The Guardian Weekly, volume 189, number 1, page 18
2. To take on a position, duty or form
   Mr. Jones will assume the position of a lifeguard until a proper replacement is found.
   His unruly hair was slicked down with water, and as Jessamy introduced him to Miss Brindle his face assumed a cherubic innocence which would immediately have aroused the suspicions of anyone who knew him. 1967, Barbara Sleigh, Jessamy, Sevenoaks, Kent: Bloomsbury, published 1993, page 96
   So while Ralph generally seems to inhabit a different, more glorious and joyful universe than everyone else here his yearning and heartbreak are eminently relateable. Ralph sometimes appears to be a magically demented sprite who has assumed the form of a boy, but he’s never been more poignantly, nakedly, movingly human than he is here. August 5, 2012, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “I Love Lisa” (season 4, episode 15; originally aired 02/11/1993)”, in (Please provide the book title or journal name)
3. To adopt a feigned quality or manner; to claim without right; to arrogate
   He assumed an air of indifference
   a. 1809,Beilby Porteus, sermon ambition assuming the mask of religion.
4. To receive, adopt (a person)
5. To adopt (an idea or cause)