respond (v.)

• acknowledge
• act
• advocate
• alternate
• answer
• apprehend
• assert
• bandy
• behave
• champion
• change
• commute
• compensate
• cooperate
• counter
• counterchange
• defend
• dig
• echo
• espouse
• exchange
• experience
• feel
• hear
• interchange
• logroll
• maintain
• perceive
• permute
• pity
• react
• rebut
• reciprocate
• reecho
• refute
• rejoin
• reply
• requite
• retaliate
• retort
• return
• reverberate
• riposte
• say
• see
• sense
• share
• smell
• support
• sustain
• swap
• switch
• taste
• touch
• trade
• transpose
• uphold