"Backward" has no prefix.
"back" is not a prefix because the word "ward" isn't related to the word "backward".
to ward off a predator, for example, is not related to the word backward.
neither is the noun "ward", as in a hospital ward.
Additionally, although "ward" appears at the end of "backward" and "forward", it is not a suffix. This is because, if taken away from the word forward, we are left with "for", which is itself not related to the word "forward". Unless it is related to the "fore" of a ship, perhaps?
Dors- dorsi or dorso- indicates the back part of something, as in dorsal fin. Retro- indicates movement backward as in retrogression.
Choose the prefix that fits this definition. bacwward or back
re-
retro
posterior
rewind
Indignant has the prefixes in- meaning in, into, against, or not and the suffixes -ant meaning person who blank.
The prefix for locate is "relocate".
Precaution
For a Quick Chart about English Language prefixes and their meanings see the related link.
The word duplicitous has no prefixes. It has the root duplex, meaning "twofold" or "double," and the suffix -itous.
Di-, Bi-
Prefixes meaning of roll
Retro- is the medical terminology combining form meaning backward.
English is confusing!
Indignant has the prefixes in- meaning in, into, against, or not and the suffixes -ant meaning person who blank.
Retroversion is the medical term meaning backward tilting of the uterus. It is a normal variant.
Retro- is the medical terminology combining form meaning backward or behind.
gyvbi
The prefix for locate is "relocate".
A prefix is something you add to the beginning of a word to alter the meaning. For metre, some common prefixes added are:centi-, meaning 100. There are 100 centimetres in a metrekilo-, meaning 1,000. There are 1,000 metres in a kilometremilli-, meaning 1,000. There are 1,000 millimetres in a metredeca-, meaning 10. There are 10 decametres in a metre
bent backward at an angle RETRO-behind, back, backward FRACT-to break, to bend
it means lollipop