To Maintain means to keep something in its existing state, condition, or activity; to preserve it from failure or decline.
It involves consistent effort and attention to uphold a desired level of performance, quality, or stability.
This can involve regular upkeep, repairs, or preventative measures. Beyond physical objects, Maintain can also refer to upholding relationships, standards, or even an argument or position, meaning to defend or assert it with conviction.
The core concept is one of continuation and preservation against forces that might lead to deterioration or change.
AVER HAVE KEEP HOLD AVOW
WIELD CLAIM EXERT
AFFIRM UPHOLD ASSERT INSIST KEEPUP ALLEGE UPKEEP REPAIR DEFEND RETAIN
SUSTAIN SUPPORT OBSERVE
PRESERVE CONTINUE CONSERVE
ASSEVERATE