All morph antonyms

verb morph

• maintain — to keep in existence or continuance; preserve; retain: to maintain good relations with neighboring countries.
• stagnate — to cease to run or flow, as water, air, etc.
• keep — to hold or retain in one's possession; hold as one's own: If you like it, keep it. Keep the change.
• preserve — to keep alive or in existence; make lasting: to preserve our liberties as free citizens.
• sustain — to support, hold, or bear up from below; bear the weight of, as a structure.