Synonyms of extension in English:

extension


See definition of extension

noun

1‘they plan an extension at the hospital to create a new outpatients' department’

SYNONYMS
addition, add-on, adjunct, addendum, augmentation, supplement, appendage, appendix
annexe, wing, supplementary building
North American ell

2‘scientific method has led to a marvellous extension of knowledge’

SYNONYMS
expansion, increase, enlargement
widening, broadening, deepening, diversification, heightening
augmentation, enhancement, amplification
development, growth, continuation
elongation, lengthening, stretching, drawing out
ANTONYMS

shrinking, contraction

3‘an extension of opening hours’

SYNONYMS
prolongation, lengthening, increase, protraction, continuation, perpetuation
ANTONYMS

shortening

4‘I need an extension for my assessed essay’

SYNONYMS
postponement, deferral, delay
longer period, extra time, more time, increased time, additional time