Silent 'b'

The 'b' is silent in the combination 'mb' at the end of a word. For example:

bom(b) clim(b) com(b) crum(b) lam(b) lim(b) plum(b)er num(b)

The 'b' is silent in the combination 'bt'. For example: 

de(b)t dou(b)t su(b)tle but not in some words, e.g. obtain, unobtrusive

Silent 'd' 

The 'd' is silent in the combination 'dg'. For example:

ba(d)ge e(d)ge han(d)kerchief he(d)ge han(d)some ple(d)ge we(d)ge We(d)nesday

Silent 'k'

The 'k' is silent in the combination 'kn'. For example:

(k)nack (k)nee (k)new (k)nickers (k)nife (k)night (k)nitting (k)nob (k)nock (k)not (k)now (k)nuckle

Silent 'n' 

The 'n' is silent in the combination 'mn' at the end of a word. For example:

Autum(n) dam(n) hym(n) colum(n) condem(n) solem(n)

Silent 'p' 

The 'p' is silent in the combination 'ps' at the beginning of a word. For example:

(p)salm (p)sychiatry (p)syche (p)sychology

Silent 'h' 

The 'h' is silent at the end of word when it follows a vowel. For example:

cheeta(h) Sara(h) messia(h) savana(h)

The 'h' is silent between two vowels. For example:

anni(h)ilate ve(h)ement ve(h)icle

The 'h' is silent after the letter 'r'. For example:

r(h)yme r(h)ubarb

r(h)ythm The 'h' is silent after the letters 'ex' For example:

ex(h)austing ex(h)ibition ex(h)ort but not in some words, e.g. exhale, exhume