敵わない[kanawanai] no match for
怨敵[onteki] sworn enemy
外敵[gaiteki] foreign enemy
敵う[kanau] to come true (wish)
仇敵[kyuuteki] bitter enemy

敵討[katakiuchi] vengeance
敵同士[tekidoushi] mutual enemies
旧敵[kyuuteki] old enemy
強敵[kyouteki] formidable enemy
公敵[kouteki] public enemy

暗中摸索[anchuumosaku] groping in the dark
家宅捜索[katakusousaku] premises search
検索[kensaku] looking up (e.g. a word in a dictionary)
鋼索[kousaku] cable
索引[sakuin] index

索具[sakugu] rigging
索条[sakujou] cable
索条鉄道[sakujoutetsudou] cable railway
索然[sakuzen] dry