ビタミン剤[bitaminzai] vitamin pills
ビラン剤[biranzai] blister agent
育毛剤[ikumouzai] (hair) tonic
下剤[gezai] laxative
化学剤[kagakuzai] chemical agent

可塑剤[kasozai] plasticizer
解毒剤[gedokuzai] antidote
解熱剤[genetsuzai] fever medicine
滑沢剤[kattakuzai] lubricant
乾燥剤[kansouzai] drying agent

一張一弛[icchouisshi] tension and relaxation
弛む[yurumu] to become loose
弛み[tarumi] slack
弛む[tarumu] to slacken
中弛み[nakadarumi] a slump

弛緩[shikan] relaxation (e.g. of muscles)
弛張振動[shichoushindou] relaxation oscillation
筋弛緩剤[kinshikanzai] muscle-relaxant drug
弛まない[tayumanai] untiring
腕弛るい[kattarui] listless

一筋道[hitosujimichi] straight road
一筋繩[hitosujinawa] (piece of) rope
横筋[yokosuji] transversal
家筋[iesuji] lineage
括約筋[katsuyakukin] sphincter

筋違い[sujichigai] cramp
筋違い[sujikai] diagonal
筋骨[kinkotsu] muscles (sinews) and bones
筋書[sujigaki] synopsis

緩々[yuruyuru] very loose
緩い[nukui] lukewarm
緩い[yurui] loose
緩み[yurumi] slack
緩む[yurumu] to become loose

緩める[yurumeru] to loosen
緩やか[yuruyaka] loose
緩下薬[kangeyaku] laxative
緩急[kankyuu] pace
緩行[kankou] going slowly