It is neither.
The word "allowable" is an adjective, and would not have a plural. You could state that there were allowable items, or allowable actions.* The "allowable" referred to in legal and commercial documents is a noun form, by extension, of terms such as deductible(which is also formally an adjective). In this case, the plural would use just the usual S, as "allowables".
prohibit
Antonyms-forbid, prohibit
ALWD for allowed or ALW for allow
Just Jordan - 2007 Piano Stressin' 1-13 was released on: USA: 10 August 2007
Ned's Declassified School Survival Guide - 2004 Popularity and Stressin' Out 3-4 was released on: USA: 15 October 2006 Germany: 29 April 2007
1) you go to the doctor 2) take it easy 3) stop stressin over little things
to allow = permitir
Words that can be made from the word allow are:aallawllalolawlowowowlwall
The word "allow" is primarily a second-stressed word. In most cases, the stress falls on the second syllable.
It is neither.
not to sure if anyone nos please tell if i knew id tell im totally stressin tryin to figure it out
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permit
allowed
The word allow is a regular verb. The past tense is allowed.