Beautify, v. t. [imp. & p. p. Beautified (p. pr. & vb. n. Beautifying.]
Etymology: [Beauty + -fy.]
To make or render beautiful; to add beauty to; to adorn; to deck; to grace; to embellish. The arts that beautify and polish life. Burke.
Syn. -- To adorn; grace; ornament; deck; decorate.
1 other Webster entry under this spelling
Beautify, v. i.
To become beautiful; to advance in beauty. Addison.
Shades of meaning
Fernald has no entry of its own for beautify; he lists it under adorn.
He lists it without comment; the entries above explain its neighbors.