
[Middle English foilen, to trample, defile, variant of filen, to defile. See file3.]

[Middle English, from Old French foille, from Latin folia, pl. of folium, leaf.]

[Origin unknown.]
Definition: circumvent, nip in the bud
Antonyms: abet, advance, aid, assist, further, help
n. each of the structures fitted to a hydrofoil's hull to lift it clear of the water at speed.
See the Introduction, Abbreviations and Pronunciation for further details.
foil, a character whose qualities or actions serve to emphasize those of the protagonist (or of some other character) by providing a strong contrast with them. Thus in Charlotte Brontë's Jane Eyre, the passive obedience of Jane's school‐friend Helen Burns makes her a foil to the rebellious heroine.
1. In tracery, any of several rounded lobes that meet each other in points called cusps; widely used in Gothic architecture, Gothic Revival architecture, and Collegiate Gothic; see trefoil (three lobes), quatrefoil (four lobes), cinquefoil (five lobes), and multifoil (usually greater than five lobes).
2. A metallic substance formed into very thin sheets, usually by a rolling process.
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The police department will try to foil the next bank robbery by posting guards at every bank.
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A very thin, flexible sheet of metal, usually gold, platinum, or tin.

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Foil may refer to:
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Dansk (Danish)
1.
v. tr. - forpurre, skuffe, komme på tværs af
n. - skuffelse, nederlag
2.
n. - folie, bæreplan
v. tr. - beklæde med folie, foliere
idioms:
3.
n. - fleuret, fægtekårde
Nederlands (Dutch)
folie, draagvleugel (boot), boog rondom figuur, floret, contrast, schermsport, verijdelen, met folie bedekken, verbeteren door contrast
Français (French)
1.
v. tr. - déjouer, contrecarrer
n. - repoussoir
2.
n. - papier aluminium, (abrév) de hydroptère
v. tr. - emballer dans du papier aluminium
idioms:
3.
n. - fleuret (escrime)
Deutsch (German)
1.
v. - vereiteln, durchkreuzen
n. - Niederlage, Fehlschlag
2.
n. - Folie
v. - mit Metallfolie belegen
idioms:
3.
n. - Florett
Ελληνική (Greek)
v. - ανατρέπω ή ματαιώνω σχέδια, προλαμβάνω
n. - λεπτό έλασμα, φύλλο (κν. πάφιλας), αλουμινόχαρτο, αντίθεση, ελαφρό ξίφος
idioms:
Italiano (Italian)
sventare, fioretto, carta stagnola
idioms:
Português (Portuguese)
v. - laminar, frustar (plano ou tentativa)
n. - folha (f) fina de metal, florete (m) (esgrima)
idioms:
Русский (Russian)
фольга, станиоль, контраст, рапира, срывать, расстраивать, подводное крыло
idioms:
Español (Spanish)
1.
v. tr. - prevenir, frustrar
n. - retroceso, contrariedad
2.
n. - papel de estaño, papel de plata, chapa, abrev. de hidrofoil
v. tr. - envolver con papel de aluminio
idioms:
3.
n. - florete
Svenska (Swedish)
v. - foliera, bilda bakgrund åt, omintetgöra, korsa (jakt)
n. - folie, bladornament (arkitekt.), spår (jakt)
中文(简体)(Chinese (Simplified))
1. 在...上贴箔, 给...铺箔, 箔, 金属薄片, 陪衬者, 陪衬物, 银箔
idioms:
2. 鬣兽逃跑的足迹, 挫败, 使受挫折, 阻扰, 击退
3. 钝头剑, 轻剑, 花剑, 花剑运动, 花剑剑术
中文(繁體)(Chinese (Traditional))
1.
v. tr. - 在...上貼箔, 給...鋪箔
n. - 箔, 金屬薄片, 陪襯者, 陪襯物, 銀箔
idioms:
2.
n. - 鈍頭劍, 輕劍, 花劍, 花劍運動, 花劍劍術
3.
n. - 鬣獸逃跑的足跡
v. tr. - 挫敗, 使受挫折, 阻擾, 擊退
한국어 (Korean)
1.
v. tr. - 좌절 시키다, 헛되게 하다, 막다, ~을 물리치다
n. - (사냥 중에) 도망 간 발자국의 격퇴
2.
n. - 박, 거울 뒤에 입힌 박, 보석 밑에 까는 박
v. tr. - ~박을 입히다, 돋보이게 하다
3.
n. - 연습용 펜싱 칼
日本語 (Japanese)
n. - 薄片, はく, 引き立てるもの, フルーレ
v. - 裏をかく, 挫く
idioms:
العربيه (Arabic)
(فعل) يحبط , يمنع (الاسم) رقاقه معدنيه
עברית (Hebrew)
v. tr. - סיכל, הפר, הביס
n. - תבוסה (מיושן), מסלול של חיה בורחת בעת ציד
n. - ריקוע, נייר אלומיניום, ניגוד
v. tr. - כיסה או חיזק בריקוע מתכת, יצר ניגוד
n. - סיף - חרב עם כפתור בקצה לסיוף
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