Suffixes คือคำที่ใส่ไว้ท้ายคำรากศัพท์เพื่อช่วยเปลี่ยนความหมายของคำรากศัพท์เดิม (เช่นเดียวกับ prefixes ที่เอาไว้เติมหน้าคำรากศัพท์) ตารางด้านล่างนี้เป็นตัวอย่างในการใช้ Suffixes
| Suffix | Meaning | Examples |
| -able/-ible | capable of | portable, legible |
| -ac/-ic | like/related to | cardiac, Nordic |
| -acy | state/quality of being | privacy, legitimacy |
| -acious/-icious | full of | gracious, malicious |
| -al | related to | logical, philosophical |
| -ance/-ence | state/quality of being | maintenance, permanence |
| -dom | state/quality of being | freedom, kingdom |
| -eer/-er/-or | person who | mountaineer, writer, counsellor |
| -escent | becoming, to be | adolescent, fluorescent |
| -esque | like/reminiscent of | picturesque, Kafkaesque |
| -fy | to make | magnify, electrify |
| -iferous | containing, yielding | vociferous, carboniferous |
| -ise | make, become | civilise, terrorise |
| -ish | having qualities of | hellish, fiendish |
| -ism | doctrine, belief, practice | favouritism, communism |
| -ist | person who | chemist, florist |
| -ity | state/quality of being | ingenuity, oddity |
| -less | without | brainless, endless |
| -ment | state/quality of being, result of action, process | enjoyment, embankment, abridgement |
| -ness | state of being | thinness, loneliness |
| -oid | like | celluloid, ovoid |
| -ose | full of | adipose, verbose |
| -osis | condition | hypnosis, psychosis |
| -ous | full of | illustrious, nauseous |
| -ship | position held | friendship, membership |
| -sion/-tion | state/quality of being | torsion, transition |
| -tude | state/quality of being | fortitude, certitude |
| -y | characterised by | funny, greedy |
อ่านเพิ่มเติม Prefixes ในภาษาอังกฤษ