3 adjectives to describe theirs

If Dr. Lowth discredited his better judgement in attempting to write an English grammar, perhaps Murray, and his weaker copyists, have little honoured theirs, in supposing they were adequate to such a work.

If Dr. Lowth discredited his better judgement in attempting to write an English grammar, perhaps Murray, and his weaker copyists, have little honoured theirs, in supposing they were adequate to such a work.

But such a mistake is quite unnecessary; and they would doubtless have remedied theirs, if they had not found it obligatory at last to push behind in order to make the donkey move homewards.

3 adjectives to describe  theirs