IPA: /ˈtɛndərˌfʊt/
KK: /ˈtɛndərˌfʊt/
A person who is new to outdoor activities or experiences and lacks the skills or toughness that come with time and practice.
As a tenderfoot, he struggled to keep up with the more experienced hikers on the trail.
Tenderfoot → The word is formed from "tender" (from Old English *tender*, meaning soft or delicate) and "foot" (from Old English *fōt*, meaning foot). A tenderfoot originally referred to someone with soft feet, often used to describe a novice or inexperienced person, particularly in the context of outdoor activities or frontier life.
Think of someone with 'soft' ('tender') feet who is new to the outdoors — that's why a tenderfoot is a beginner or novice.