There are 2 main definitions of -t in English:

-t1

Syllabification: -t

suffix

Equivalent to -est2 (as in shalt).

Definition of -t in:

There are 2 main definitions of -t in English:

-t2

Syllabification: -t

suffix

Equivalent to -ed2 (as in crept, sent, slept).

Definition of -t in: