second only to

:  next to the first in place or time

:  next to the first in value, excellence, or degree

:  inferior, subordinate

:  one that is next after the first in rank, position, authority, or precedence

:  one that assists or supports another

:  the assistant of a duelist or boxer

:  the 60th part of a minute of angular measure

:  the 60th part of a minute of time :  1/86,400 part of the mean solar day

:  the base unit of time in the International System of Units that is equal to the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom

:  to give support or encouragement to :  assist

:  to support (a fighting person or group) in combat :  bring up reinforcements for

:  to support or assist in contention or debate

:  unquestionably the best :  peerless

:  alone in a class or category :  sole

:  having no brother or sister

:  as a single fact or instance and nothing more or different :  merely

:  solely, exclusively

:  at the very least

:  with the restriction that :  but

:  and yet :  however

:  were it not that :  except