Here are some examples: having thin consistency; "a tenuous fluid" flimsy: lacking substance or significance; "slight evidence"; "a tenuous argument"; "a thin plot"; a fragile claim to fame" Doubt, a status between belief and , involves uncertainty or distrust or lack of sureness of an alleged fact, an action, a motive, or a decision. ...

His first steps were not strong or confident. Maybe he was sick or wounded. You could use this for a baby's first steps as well.