嘗(かつ)て

once; formerly

嘗(な)める

to lick; to taste; to underestimate

嘗(な)めてかかる

to underestimate; to take lightly

嘗試(しょうし)

testing; trial; tasting

臥薪嘗胆(がしんしょうたん)

enduring hardships to achieve one's goal

嘗(な)め回(まわ)す

to lick all over; to examine thoroughly

嘗(な)め尽(つ)くす

to lick up completely; to exploit completely

嘗(かつ)ての栄光(えいこう)にすがっていては、未来(みらい)は開(ひら)けない。

If you cling to past glory, the future will not open up.

相手(あいて)を嘗(な)めてかかると、思(おも)わぬ反撃(はんげき)を受(う)ける。

If you underestimate your opponent, you may face an unexpected counterattack.