【形式ばった表現】 take an oath
【形式ばった表現】 make a vow
give [【形式ばった表現】 pledge] one's word
神に誓う
禁酒を誓う
swear off drinking; take the pledge《★おどけていうことも多い》
読み方 ちかう
To swear, swear an oath, take an oath, make oath; to vow, make a vow, take the vows (of celibacy, etc.); to pledge one's honour, pledge one's word, plight one's word, give one's word, pass one's word; to pledge oneself, bind oneself (to something); to promise solemnly (to do something)