[f. STEM v.2 + -LESS.] That cannot be stemmed.

1

a. 1822.  in H. Miller, Scenes & Leg. N. Scot. (1850), 257. Till the life-blood, stemless gushing, Lays the plaided hero low.

2

1911.  Daily News, 14 April, 2. Time is an ebbless Tide, a stemless stream.

3