逆探知[gyakutanchi] phone trace
金属探知機[kinzokutanchiki] metal detector
金探し[kinsagashi] searching for gold
厳探[gentan] strict search
伺い探る[ukagaisaguru] to spy out

私立探偵[shiritsutantei] private detective
手探り[tesaguri] fumbling
人探し[hitosagashi] searching for someone
あら探し[arasagashi] finding fault
探し求める[sagashimotomeru] to search for

悪足掻き[waruagaki] useless resistance
一挙手一投足[ikkyoshuittousoku] slight effort
一足[issoku] pair (footwear)
一足[hitoashi] step
一足先[hitoashisaki] one step ahead

一足飛び[issokutobi] (at) one bound
逸足[issoku] fast runner
右足[migiashi] right foot
運動不足[undoubusoku] insufficient exercise
栄養不足[eiyoubusoku] malnutrition