Alter (verb)
Synonyms : πto change, to modify, to turn into, to modify, to vary, to amend.
Antonyms : πto fix,
to stabilise
to freeze, to remain.
A confused word with Alterπ : Altar(a holy table or surface used in religious ceremonies)
Pronounciation : π'
ΙΛltΙr -> US
ΛΙΛltΙ. - > UK
Another meaning :πto make a piece of clothing longer, wider etc so that it fits
β οΈ Have/get something altered
πDefinition :to change something especially slightly or to cause the characters to change
Example : I cannot alter my plan
Example : Tom lost weight
he has to get his suit altered
Prefixes and suffixes of the word :π
Alter+er
Pre+alter
Re+alter
Idioms : πAlter beyond all recognition
Alter out of all recognition
Alter ego
Word usage in context : π can be both transitive and intransitive verbs
Examples : my uncle altered the design of his house (transitive)
Example : a tailor had Ann's all clothes altered
Collocations : π make an alternation to something
Completly/considerably/extensively/greatly/profoundly/radically/significantly/
Substantially/ slightly alter
Not alter the fact that.....
Word formation :π alter (noun)
Alter (verb)
Alterability (noun)
Alternation (noun)
Alterable (adjective)
Alternative ( adjective)
Alterabily (adverb)
Another adverb form of the word : πin an alterable manner/way
Difference between :π Alternate Alternative
Alternate is used when we say every second
Alternative is used
When you can choose to do or use instead of something else
Example : The victim was tied to a sacrificial altar
Proverb : π "Circumstances alter cases"
"Noone can alter what is past"
Prepositional phrases :π Alter in
Alter for
Alter with
Alter from
Alter to
Alter within
Alter towards
Alter beyond
Alter at
A level of the word :π B2 Intermediate
Formal
Example :π I wouldn't have recognised her if she hadn't introduced herself
She is really altered out of recognition since we were kids
Tonguetwister :π Alen and Alex altered all adults ambitions
Another meaning :π Mutate
Example :π Simple organisms like bacteria mutate rapidly.
Medical context :π"Alternate personality" 
Example :π Tom altered his work . He works on alternate days now
When my mom can't drive me to the school the alternative is riding a bus