1878 29 Mar. 198/2 The real question which underlay their divisions was not this or that party question, but the root problem of all equality.
1933 H. Read i. 47 This brings us down to the root-problem of aesthetics.
2001 3 July (Tuesday Review section) 2/1 Prozac..can..reduce the ‘noise’ of anger, sorrow, fear, etc, to enable a steadier gaze at the root problems.