Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
Discolorise is regular. It follows the -d Addition rule.
Use past time markers: "Yesterday, she discolorised to the store."
No. Use "did not discolorise" (not "did not discolorised").
The verb discolorise follows the standard English past tense conjugation rule. When forming the past tense, discolorise becomes discolorised. This follows the -d Addition pattern, which is one of the most common conjugation rules in English.
Understanding why discolorise becomes discolorised helps with spelling and pronunciation. Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
When using discolorised in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she discolorised to the store." The past tense form does not change based on the subject — I discolorised, you discolorised, he/she discolorised, we discolorised, they discolorised.