Opposite of futile

Opposite of future

Opposite of fundamental

Opposite of funereal

Opposite of funny

Opposite of furbish

Opposite of frolicsome

Opposite of frugal

Opposite of fruit

Opposite of fruitful

Opposite of fruition

Opposite of fulfil

Opposite of fulfill-n

Opposite of fulminate

Opposite of fulsome

Opposite of fume

Opposite of function

Opposite of fund

Opposite of frolic

Opposite of frenzy

Opposite of frequent

Opposite of fresh

Opposite of fretful

Opposite of friction

Opposite of friend

Opposite of frightful

Opposite of frigid

Opposite of frippery

Opposite of frisk

Opposite of frisky

Opposite of fritter

Opposite of frivolous

Opposite of fraternize

Opposite of freakish

Opposite of fortify

Opposite of fortitude

Opposite of fortuitous

Opposite of forward

Opposite of found

Opposite of fractious