acumen, barren, betoken, brazen, burden, careen, cheapen, craven, crestfallen, dampen, dishearten, embolden, forsaken, hasten, haven, heighten, kaizen, keen, kraken, laden, lessen, maiden, mistaken, olden, omen, pathogen, smidgen, smitten, soften, specimen, strengthen, sudden, sullen, token, uneven, verboten, weaken, worsen