impregnable
adjective
uk/ɪmˈpreɡ.nə.bəl/us/ɪmˈpreɡ.nə.bəl/Abuildingor otherplacethat is impregnable is sostronglybuiltand/ordefendedthat it cannot beenteredbyforce:
(建筑或其他场所)坚不可摧的,固若金汤的Despiteburglaralarmsandwindowlocks,homesare never impregnable againstdeterminedthieves.即使家里装上防盗警报器并锁好窗户,也挡不住贼心不死的小偷。
mainlyUK
powerfulandimpossibletobeat,especiallyinsport:
(尤指体育运动中)不可战胜的Surrey have beenbuildingup an impregnableleadin this season's County Championship.在本赛季的全郡锦标赛中,萨里队已经遥遥领先,势不可当。
Safe and secure
- airworthiness
 - airworthy
 - as safe as housesidiom
 - biosafety
 - bite
 - health and safety
 - in safe handsidiom
 - innocent
 - innocuous
 - innocuously
 - safe space
 - safeguard
 - safely
 - safeness
 - safety
 - seaworthy
 - someone/somethingwon't biteidiom
 - the coast is clearidiom
 - well kept
 - worthy
 
You can also find related words, phrases, and synonyms in the topics:
Physically strong and powerful