maintain
meɪnˈteɪn,mənˈteɪn/Submit
verb
1.
cause or enable (a condition or situation) to continue.
"the need to maintain close links between industry and schools"
synonyms: continue, keep, keep going, keep up, keep alive, keep in existence, carry on, preserve, conserve, prolong, perpetuate, sustain, bolster (up), prop up, retain, support, bear
"the need to maintain close links between industry and schools"
2.
provide with necessities for life or existence.