walk on eggs, to

walk on eggs

To act or proceed with great care, caution, and consideration so as not to upset someone or trigger some imminent disaster. The littlest thing tends to anger my mother, so I feel like I have to walk on eggs whenever I'm at her house. You always have to walk on eggs when you talk to the media about the company, because they can end your career in a heartbeat if they feel like you're exposing their business practices to public scrutiny.
See also: egg, on, walk
Farlex Dictionary of Idioms.

walk on eggs

 and walk on thin ice
Fig. to proceed very cautiously; to be in a very precarious position. (Fig. on the image of someone walking on something that offers little support and may collapse at any moment.) I have to remember that I'm walking on eggs when I give this speech. Careful with radical ideas like that. You're walking on thin ice.
See also: egg, on, walk
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

walk on eggs

Proceed very cautiously, as in I knew I was walking on eggs when I asked about the department's involvement in the lawsuit . This metaphoric idiom transfers walking on fragile eggs to discussing or investigating a dangerous subject. [First half of 1700s]
See also: egg, on, walk
The American Heritage® Dictionary of Idioms by Christine Ammer.

walk on eggs (or eggshells)

be extremely cautious about your words or actions.
See also: egg, on, walk
Farlex Partner Idioms Dictionary

walk on eggs

and walk on thin ice
in. to walk very cautiously; to be in a very precarious position. I have to remember that I’m walking on eggs when I give this speech. You’re walking on thin ice when you criticize a member of that group.
See also: egg, on, walk
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

walk on eggs, to

To proceed very carefully. One could not, of course, literally tread on eggs without breaking them, so the image of extreme caution is actually hyperbole. The expression dates from the late sixteenth century. Robert Burton used it in The Anatomy of Melancholy (1621): “Going as if he trod upon eggs.”
See also: on, walk
The Dictionary of Clichés by Christine Ammer
See also:
  • walk on eggs
  • walk on thin ice
  • walking on eggs
  • walk on eggshells
  • be treading on eggshells
  • eggshell
  • be walking on eggshells
  • chip on one's shoulder, to have a
  • hard head
  • a hard head