therefore therefore /ˈðɛrˌfɔr/

adverb

1. () (used to introduce a logical conclusion) from that fact, reason or as a result  ( so , thence , hence , therefore , thus )
   (used to introduce a logical conclusion) from that fact, reason or as a result
    Therefore X must be true
   therefore X must be true
    The eggs were fresh and hence satisfactory
   the eggs were fresh and hence satisfactory
    We were young and thence optimistic
   we were young and thence optimistic
    It is late and thus we must go
   it is late and thus we must go
    The witness is biased and so cannot be trusted
   the witness is biased and so cannot be trusted
   
2. As a consequence  ( therefore , consequently )
   as a consequence
    He had good reason to be grateful for the opportunities which they had made available to him and which consequently led to the good position he now held
   he had good reason to be grateful for the opportunities which they had made available to him and which consequently led to the good position he now held
   

conjunction

1. () And for this reason; as a result  ( so , therefore )
   and for this reason; as a result