premature
Another word for early is premature.
Late hours?
robin
during imperialism/early settlers
undeveloped, immature, early, unready, unripe
brunch, early meal, or morning meal
An ambon is another word for an ambo, a raised platform in an early Christian church.
A student who is in the early stages of their education can be referred to as a pupil or a learner.
Old-fashioned dress, dressing style of that age or era.
mistimed, inappropriate, awkward, early, premature, too early, too late, unsuitable, unfavorable, wrong, inconvenient, unseasonable, unseemly
No early is not a compound word.
No, the word "early" is an adverb, not a preposition. It is used to describe the timing of an action or event.