meek as a lamb
Exceptionally patient, humble, and mild in manner or spirit. Despite his hulking, imposing appearance, the huge athlete is as meek as a lamb when you speak to him in person.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
*meek as a lamb
[of someone] shy, quiet, and docile. (*Also: as ~.) Only an hour after their argument, Joe went to Elizabeth and, meek as a lamb, asked her to forgive him. Betsy terrorizes the other children, but she's as meek as a lamb around her elders.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.