tìorail

warm, cosy, sheltered, Irish tíoramhuil, cosy; Welsh tirion, pleasant, a familiar abject; cf. Irish tíoramhuil, tíorthamhuil, homely, national, from tír. Dr Cameron regarded it as taken from the root of tioram, which is ultimatley the same as that of tìr. Borrowing from English cheerful is unlikely.