2005580 jmdict A [id=2220408]
利かす[news2,nf41]；効かす
きかす[news2,nf41]
[1][v5s,vt]
  to bring out (the effect of); to put to good use; to make use of (e.g. threats); to use (e.g. intimidation); to take advantage of (e.g. one's influence); to season (with salt, etc.); to put in
  [see=2005590・利かせる[1]]
[2][v5s,vt]
  to use (tact, wit, etc.); to exercise; to display
  [see=2836064・気を利かす[1]]