green behind the ears

Naive and untested

Green behind the ears describes someone who is inexperienced, naive, or immature—typically a newcomer to a job, field, or situation who hasn't yet learned how things work.

The phrase combines the freshness suggested by green with the vulnerability of exposed skin behind the ears, evoking a young animal still wet from birth.

He's still green behind the ears, so don't expect him to handle clients alone yet.

The more common variant is simply "green" or "wet behind the ears."

Related

novice · new to the game · neophyte · tenderfoot · tyro · amateur · greenhorn · fresh-faced · rookie · unseasoned · fledgling · apprentice · learner · beginner · immature · budding · probationer · trainee

Opposites
experience and worldliness

green behind the earsseasoned

Flavored or battle-tested

experienced · worldly-wise · veteran · old hand · been around the block

sophistication and savvy

green behind the earsstreetwise

Shrewd from urban experience

savvy · shrewd · sharp · knowing · worldly

Family

green, greens, greener, greenest, greenish, greenery, greenly, ear, ears

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G