In Scots dialect, a haverel is someone regarded as silly, foolish, or lacking good sense. Although it names a person and is therefore grammatically a noun, it can function descriptively in phrases such as “mere haverels,” where it characterizes people as inferior or foolish. In poetry, the term may convey affectionate teasing, scorn, or a speaker’s strong preference for one person over others.

Haverel is a Scots dialect term, also spelled havrel in some sources. It is related to haver, a Scots verb meaning to talk foolishly, babble, or speak nonsense. In Baillie’s line, a’ but means “all merely” or “all nothing but,” intensifying the comparison: the other lads are “nothing but fools” beside Johnny. Do not confuse haverel with a formal Adjective. It is principally a noun, though it may be used in a descriptive way when applied to people.