Earfoþ-tǽcne

According to the Old English Dictionary:

earfoþ-tǽcne

adj. Difficult to be shewn; diffĭcĭlis demonstrātu :-- Eorþe and wæter earfoþtǽcne wuniaþ on fýre earth and water dwell in fire difficult to be shewn, Bt. Met. Fox 20, 294; Met. 20, 147. earfoþ-tæcne