Collins English-English Dictionary

this [ðɪs]

1. 1. determiner [used before a singular noun] used preceding a noun referring to something or someone that is closer: distinct from that

   this dress is cheaper than that one

   look at this picture

2. 2. determiner (as pronoun)

   this is Mary and that is her boyfriend

   take this

3. 3. determiner used preceding a noun that has just been mentioned or is understood

   this plan of yours won't work

4. 4. determiner (as pronoun)

   I first saw this on Sunday

5. 5. determiner used to refer to something about to be said, read, etc

   consider this argument

6. 6. determiner (as pronoun)

   listen to this

7. 7. determiner the present or immediate

   this time you'll know better

8. 8. determiner (as pronoun)

   before this, I was mistaken

9. 9. determiner often used in storytelling, an emphatic form of a the

   I saw this big brown bear

10. 10. determiner an emphatic form of this

11. 11. adv used with adjectives and adverbs to specify a precise degree that is about to be mentioned

    go just this fast and you'll be safe

12. 12. adv [Etymology] Old English thes, theos, this (masculine, feminine, neuter singular); related to Old Saxon thit, Old High German diz, Old Norse thessi