simple past tense and past participle of maintain
"She maintained her composure even when the crowd began to cheer wildly."
In plain English: To maintain means to keep something in good condition or at a certain level by taking care of it regularly.
"He maintained his garden every weekend to keep the flowers blooming."
Usage: Use maintained to describe an action that was kept up or continued in the past, such as saying the road was maintained for years. It specifically refers to the completed state of preserving something, rather than the ongoing process itself.
kept in good condition
"The old lighthouse has been meticulously maintained, so its beacon still cuts through the fog every night."
continued in your keeping or use or memory
"in...the retained pattern of dancers and guests remembered"
showing maintenance or attention
"He maintained his garden with such care that every flower seemed to be thriving under the summer sun."
In plain English: Maintained means something is kept in good working order or continues to exist without changing.
"The well-maintained garden looked beautiful all summer long."
Usage: Use maintained as an adjective only when describing something that has been kept in good condition through regular care, such as a well-maintained garden. Do not use it to mean "kept up" in the sense of continuing an action, as that requires a verb form.
Derived from Old French mantenir, this term originally meant to hold up, support, or keep in existence. It entered English via the past tense of maintain, reflecting an action of preserving something against decay or loss.